System for integrating ai based analysis and machine learning for jewels, precious metals, ornaments, and stones

An integrated system using AI, 3D imaging, and thermal imaging addresses the limitations of manual inspection by providing precise, non-destructive analysis and documentation for jewels and metals, enhancing accuracy and efficiency.

WO2026140000A1PCT designated stage Publication Date: 2026-07-02SUBRAMANIAN RAJALAKSHMI +1

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SUBRAMANIAN RAJALAKSHMI
Filing Date
2025-12-24
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Conventional methods for analyzing jewels, precious metals, and stones rely heavily on manual inspection, which is time-consuming, subjective, and prone to inaccuracies, often requiring destructive testing to identify internal compositions or defects.

Method used

An integrated system utilizing AI, machine learning, 3D imaging, and thermal imaging technologies for comprehensive 360-degree analysis, enabling precise non-destructive evaluation by creating detailed 3D models and thermal imaging to detect internal compositions and anomalies.

Benefits of technology

The system provides accurate, efficient, and automated analysis, minimizing human error and preserving the integrity of the items while ensuring comprehensive documentation and classification.

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Abstract

The present invention relates to a system and method for non-destructive analysis of jewels, precious metals, ornaments, and stones using an integrated Al-based evaluation system. The system comprises a sample holding tray (1) and an enclosure system housing an X-ray fluorescence (XRF) spectrometer (5) and a thermal imaging camera (3), wherein either or both components are rotatable at specific angles, including 30, 60, or 360 degrees, to facilitate comprehensive multi-angle analysis. A 3D imaging camera (2) captures structural details, while the thermal imaging camera (3) detects heat distribution patterns for identifying internal defects. The XRF spectrometer (5) determines elemental composition by analyzing fluorescence emissions. A 360-degree rotating motor (6) enables controlled movement of the sample tray (1) and / or enclosure system. An Al -based computational module processes acquired data for classification, authentication, and valuation. A digital storage unit maintains records, including 3D models, ensuring precise, automated, and non-destructive evaluation.
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Description

[0001] Title:

[0002] SYSTEM FOR INTEGRATING Al BASED ANALYSIS AND

[0003] MACHINE LEARNING FOR JEWELS, PRECIOUS METALS, ORNAMENTS, AND STONES

[0004] FIELD OF THE INVENTION:

[0005] The present invention pertains to the field of non-destructive analysis of jewels, precious metals, ornaments, and precious stones. More particularly, the invention relates to an advanced system and method for integrating artificial intelligence (Al), machine learning (ML), three-dimensional (3D) imaging, and thermal imaging technologies to perform comprehensive evaluations of the analysed items.

[0006] BACKGROUND OF THE INVENTION:

[0007] Conventional methods for analysing and evaluating jewels, precious metals, and stones rely heavily on manual inspection, which is inherently time-consuming, subjective, and prone to inaccuracies. Existing techniques also fail to generate precise digital models and records of the analysed items. Furthermore, current systems often necessitate destructive testing to identify internal metal compositions or defects, resulting in potential loss of value. There exists a need for integrating an automated, non-destructive system incorporating Al and advanced imaging technologies to address these shortcomings, ensuring precise analysis and record-keeping.

[0008] We can see numerous applications related to the subject matter, In WO2021237076A1, synthesizing a diamond using a diamond synthesis machine. A processor receives a plurality of images of a diamond during synthesis within a diamond synthesis machine, each of the plurality of images captured within a time period. The processor executes a diamond state prediction machine learning model using the plurality of images to obtain a predicted data object, the predicted data object indicating a predicted state of the diamond within the diamond synthesis machine at a time subsequent to the time period. The processor detects a predicted defect, a number of defects, defect types, and / or sub-features of such defects and / or other characteristics (e.g., a predicted shape, size, and / or other properties of predicted contours for the diamond and / or pocket holder) of the predicted state of the diamond. The processor adjusts operation of the diamond synthesis machine.

[0009] In , US6304853B1, showing an automated gemstone evaluation system for producing a gemstone evaluation report and method for doing the same. The automated gemstone evaluation system receives gemstone data unique to the gemstone being evaluated from the user via an input device, like a keyboard for a computer. Theautomated gemstone evaluation system further includes a processor, which determines a pricing estimate and generates an evaluation report. The evaluation report is communicated to the user via an output device, and preferably includes a summary description of the qualities of the gemstone. The system and method further allow for the input to be received from a user located remotely and for the output to be returned to the remotely located user.

[0010] An article Gemtelligence: Accelerating Gemstone classification with Deep Learning, May 2023, DOI:10.48550 / arXiv.2306.06069, LicenseCC BY 4.0, The value of luxury goods, particularly investment-grade gemstones, is greatly influenced by their origin and authenticity, sometimes resulting in differences worth millions of dollars. Traditionally, human experts have determined the origin and detected treatments on gemstones through visual inspections and a range of analytical methods. However, the interpretation of the data can be subjective and time-consuming, resulting in inconsistencies. In this study, we propose Gemtelligence, a novel approach based on deep learning that enables accurate and consistent origin determination and treatment detection. Gemtelligence comprises convolutional and attention-based neural networks that process heterogeneous data types collected by multiple instruments. Notably, the algorithm demonstrated comparable predictive performance to expensive laser-ablation inductively-coupled-plasma mass-spectrometry (ICP-MS) analysis and visual examination by human experts, despite using input data from relatively inexpensive analytical methods. Our innovative methodology represents a breakthrough in the field of gemstone analysis by significantly improving the automation and robustness of the entire analytical process pipeline.

[0011] However, still there is a need for integrating Al based precious stone, ornament or jewel analysis and machine learning techniques.

[0012] thermal imaging technologies to perform comprehensive evaluations of the analyzed items.

[0013] Objects of the Invention:

[0014] The primary object of the present invention is to provide an integrated system for AI-based system configured for comprehensive 0 to 360-degree analysis of jewels, precious metals, ornaments, and precious stones within a controlled testing chamber.The invention aims to address the need for accurate and efficient analysis through the integration of advanced technologies and methodologies.

[0015] Another object of the present invention is to provide a method for integrating AI-based system configured for comprehensive 0 to 360-degree analysis of jewels, precious metals, ornaments, and precious stones within a controlled testing chamber. The invention aims to address the need for accurate and efficient analysis through the integration of advanced technologies and methodologies

[0016] Facilitating the generation of precise three-dimensional models of the analyzed items using state-of-the-art 3D imaging technology to ensure detailed visualization and evaluation.

[0017] Enabling the use of high-end thermal imaging cameras to detect and analyze the internal composition of the items, thereby identifying impurities, mixed metals, or structural anomalies with high accuracy.

[0018] Implementing Al-powered modules for automated analysis of received items to evaluate their precious material content and determine value using regression-based computational techniques.

[0019] Utilizing machine learning algorithms to accurately identify the model, type, and size of the analyzed items, ensuring a high degree of specificity in classification and evaluation.

[0020] Providing a novel and efficient method for the automatic creation of a digital library that comprises detailed records and 3D models of analyzed items, ensuring seamless storage and retrieval for future reference and analysis.

[0021] Summary of the Invention:

[0022] The present invention discloses a testing chamber machine equipped with integrated technologies for analyzing jewels, precious metals, ornaments, and stones. The system is designed to deliver advanced capabilities for comprehensive examination and valuation of these items, addressing the challenges of existing methods by combining precision, efficiency, and automation. Central to this invention is a 360-degree analysis system that enables complete rotational and angular coverage of the item under examination. This mechanism ensures that every surface and angle of the item is meticulously scanned, leaving no area unexamined.To facilitate detailed visualization, the invention incorporates a 3D imaging module. This high-precision imaging system utilizes strategically positioned cameras to capture images from multiple perspectives. These images are then processed to construct an accurate three-dimensional model of the analyzed items. This model not only provides detailed insights into the item's surface features but also allows users to explore its structure with unparalleled clarity. This feature is invaluable for identifying fine details, such as intricate designs in jewelry or surface irregularities in precious metals and stones.

[0023] A critical component of the invention is the thermal imaging system. High-end thermal imaging cameras are integrated into the chamber to perform non-destructive analysis of the heat signature of the items. By analyzing the thermal profile, the system can detect internal structures and compositions that may not be visible to the naked eye. This capability is particularly useful for identifying impurities, mixed metals, or structural inconsistencies in items such as ornaments and precious stones. The use of thermal imaging ensures that the analysis is thorough and accurate without causing any damage to the items.

[0024] The invention further incorporates an Al-assisted evaluation module. This module is configured to analyze data acquired from the items and determine the value of their precious material content. By employing regression techniques, the Al module can assess various parameters, such as weight, purity, and material composition, to provide an accurate valuation. This automated approach not only enhances the speed and consistency of the analysis but also minimizes the potential for human error, making it a reliable tool for professionals in the jewelry and precious metals industries.

[0025] Another innovative feature of the invention is the machine learning identification module. This module is trained using vast datasets to identify the model, type, and size of the analyzed items with high precision. By leveraging advanced machine learning algorithms, the system can classify items based on their unique characteristics, such as shape, material, and design patterns. This classificationcapability is essential for creating detailed and organized records, ensuring that each item is accurately documented and easy to reference in the future.

[0026] The invention also includes a digital library creation module, which automates the process of recording all analyses and 3D models of the items into a secure digital library. This module ensures individual identification and historical record-keeping for every analyzed item. By maintaining detailed records, including 3D models, the digital library serves as a valuable resource for future reference, enabling users to track the history and characteristics of each item with ease. This feature is particularly beneficial for applications in authentication, certification, and quality control.

[0027] The testing chamber machine comprises a secure input mechanism for receiving items such as jewels, precious metals, ornaments, or stones. This mechanism ensures that the items are safely and accurately positioned within the chamber for analysis. A motorized rotational platform is included to rotate the item, enabling comprehensive 360-degree analysis. This platform is designed to handle items of various sizes and weights, ensuring versatility and adaptability in its operation.

[0028] High-resolution cameras are strategically placed within the chamber to capture images from multiple angles, forming the basis of the 3D imaging system. These cameras are calibrated to deliver exceptional clarity and accuracy, ensuring that the constructed 3D models are of the highest quality. Advanced thermal imaging cameras are also installed within the chamber to analyze the thermal profile of the items. These cameras are capable of detecting minute variations in heat signatures, enabling the identification of internal compositions and impurities with remarkable precision.

[0029] Embedded processors integrated with pre-trained Al and machine learning models are used to analyze data, perform value estimation, and classify the items. These processors are optimized for high-speed data processing, ensuring that the analysis is completed quickly and efficiently. The digital storage unit is configured to maintain detailed records of the analyzed items and their corresponding 3D models within a secure digital library. This storage system is designed to handle large volumes of data, ensuring scalability and reliability for long-term use.The advantages of the present invention are numerous. One of the primary benefits is its ability to perform non-destructive analysis. By utilizing advanced imaging and thermal technologies, the system enables non-invasive examination of the internal composition and surface features of the items, preserving their integrity. The automated operation of the system minimizes the need for manual intervention, enhancing the speed and consistency of the analysis while reducing the potential for errors.

[0030] Comprehensive documentation is another significant advantage of the invention. By creating accurate and detailed digital records, including 3D models, the system ensures that all analyzed items are thoroughly documented. This capability is invaluable for future reference, particularly in applications such as authentication, certification, and quality control. The high precision of the system, achieved through the integration of advanced technologies, ensures that measurements and evaluations are accurate and reliable, making it a trusted tool for professionals in the industry.

[0031] The adaptability of the system is yet another noteworthy advantage. The testing chamber machine is designed to accommodate a wide range of items, from small jewellery pieces to larger ornaments and precious metals. This versatility makes it suitable for use in various settings, including jewellery appraisal centers, precious metal trading firms, authentication and certification agencies, auction houses, museums, and industrial quality control and research laboratories.

[0032] In jewellery appraisal canters, the system provides accurate and efficient analysis of items, enabling appraisers to determine their value with confidence. Precious metal trading firms can use the system to authenticate and evaluate the quality of metals, ensuring fair transactions. Authentication and certification agencies benefit from the system's ability to provide detailed records and 3D models, supporting their efforts to verify the authenticity of items. Auction houses and museums can use the system to document and analyze valuable items, preserving their history and characteristics for future generations. Industrial quality control and research laboratories can leverage the system's advanced capabilities to conduct precise and non-destructive testing of materials, supporting their research and development efforts.The present invention provides an advanced, Al-based system for the non-destructive analysis of jewels, precious metals, ornaments, and stones. By integrating cutting-edge technologies such as Al, machine learning, 3D imaging, and thermal imaging, the invention overcomes the limitations of existing systems, offering unparalleled precision, efficiency, and record-keeping capabilities. The innovative design and functionalities of the system make it a valuable tool for a wide range of applications, addressing the needs of professionals and organizations in the jewellery and precious metals industries.

[0033] This provisional specification is provided to describe the invention comprehensively. Specific embodiments and configurations may be elaborated in subsequent complete specifications. By addressing the challenges of traditional methods and incorporating advanced technologies, the present invention sets a new standard for the analysis and valuation of precious materials, ensuring accuracy, efficiency, and reliability in every aspect of its operation.

[0034] DETAILED DESCRIPTION OF THE DRAWING;

[0035] Figures 1 and 2 illustrate the proposed system analysed the jewels presented and shows the weight precisely in accordance with the present invention.

[0036] Figure 3 illustrates the jewel analytical device as proposed in the present disclosure. Figure 4 illustrates the side view of the jewel analytical device as proposed in the present disclosure.

[0037] Figure 5&6 illustrates the front angled view of the jewel analytical device as proposed in the present disclosure.

[0038] DETAILED DESCRIPTION OF THE PRESENT INVENTION

[0039] Figures 1 and 2 depict an embodiment of the proposed system, which, in accordance with the present invention, is adapted to analyze the presented jewels and accurately determine their weight. A significant aspect of this embodiment is that the system is configured to ascertain the weight of jewels or ornaments, as well as other associated weights, including stones or any additional metal weights, with precision.

[0040] Another aspect, the proposed system is adapted to randomly select multiple locations on the presented jewel and perform multi-point scanning to analyze and accurately determine its weight. A significant aspect of this embodiment is that the system isconfigured to ascertain the weight of jewels or ornaments, as well as other associated weights, including stones or any additional metal weights, with precision.

[0041] Figure 3 illustrates the system operates as an integrated analytical device for the detailed examination of materials. The circular tray (1) securely holds the sample for analysis. The 3D imaging camera (2) captures the structural details of the sample, providing precise spatial data. The thermal camera (3) measures and records the temperature distribution of the sample for thermal property analysis. The power supply (4) provides the necessary energy to the system components. The XRF spectrometer (5) performs elemental composition analysis by emitting X-rays and detecting the characteristic fluorescence emitted by the material. The 360-degree rotation motor (6) enables the sample to rotate, allowing for multi-angle analysis to ensure comprehensive examination. Finally, the mounting stand (7) provides stability and ensures the accuracy of the system during operation. This combination of components enables non-destructive, precise scanning and analysis of materials, making it ideal for applications such as material characterization and precious metal analysis.

[0042] Figure 4 illustrates the side-view schematic representation of a system featuring a 360-degree rotating motor (6), which plays a crucial role in enabling rotational analysis of the sample being studied. The design is structured as follows:

[0043] The central shaft connected to the rotating motor (6) provides smooth and precise rotational movement, allowing the sample or tray (1) to spin along its axis. This functionality facilitates multi-angle data acquisition, which is critical for thorough examination and analysis.

[0044] The upper portion houses the imaging and analytical devices, such as cameras (2, 3) and the spectrometer (5), which are positioned to capture data from the rotating sample with accuracy.

[0045] The base structure, including the mounting stand (7), ensures the system's stability during operation and minimizes vibrations that could affect measurement accuracy. This layout is optimized for systems requiring high-precision, non-destructive testing, and analysis, such as in the characterization of materials or inspection of precious metals.Figure 5 illustrates the front-angled view of the system, showcasing its tilted configuration for enhanced functionality and accessibility. The key components, labeled with part numerals, are as follows:

[0046] The sample holding tray (1) is located at the upper section of the device, where the sample is positioned securely for analysis.

[0047] The 3D imaging camera (2) and the thermal camera (3) are housed in the upper portion, oriented to capture detailed structural and thermal data of the sample.

[0048] The XRF spectrometer (5) is embedded within the system to analyze the sample's elemental composition using non-destructive methods.

[0049] The 360-degree rotating motor (6) is integrated to facilitate the rotation of the sample tray (1), enabling comprehensive multi -angle analysis.

[0050] The power supply unit (4) is positioned to provide the required energy for all operational components.

[0051] The mounting stand (7) at the base ensures the stability and structural integrity of the system during operation, even in a tilted configuration.

[0052] This angled view highlights the ergonomic design, allowing precise alignment of analytical components and ease of sample placement for thorough examination.

[0053] The system operates as an integrated material analysis device designed for precision and versatility. The sample holding tray (1) securely positions the sample, which can be analyzed from multiple angles using the 360-degree rotating motor (6). This rotation ensures comprehensive data collection. The 3D imaging camera (2) captures the sample's structural details, while the thermal camera (3) records temperature distribution, enabling a detailed thermal analysis. For elemental composition, the XRF spectrometer (5) emits X-rays and detects the fluorescent response, providing precise material identification.

[0054] The system's functionality is powered by the power supply unit (4), which ensures uninterrupted operation of all components. The mounting stand (7) provides stability and prevents vibrations, ensuring accurate readings during operation. The ergonomic and adjustable design, including the tilted configuration, allows for optimal alignment of analytical tools and easy access for sample placement.This integrated system is ideal for non-destructive material analysis, offering detailed structural, thermal, and elemental insights, making it suitable for applications like material characterization and precious metal inspection.

[0055] In another embodiment in the invention where the 360-degree rotation mechanism enhances the accuracy and comprehensiveness of thermal imaging and X-ray fluorescence (XRF) analysis by allowing the item to be examined from multiple angles without repositioning. As the sample holding tray rotates, the thermal imaging camera continuously captures heat distribution patterns across different surfaces, enabling precise detection of hidden anomalies, material inconsistencies, or internal defects. Simultaneously, the XRF spectrometer, positioned at a fixed orientation, performs elemental composition analysis by emitting X-rays onto the rotating item, ensuring that fluorescence emissions from all sides are detected and analyzed. This rotational capability eliminates blind spots, ensuring uniform exposure to imaging and spectrometric analysis while minimizing human intervention. The system configuration integrates synchronized movement control, aligning the rotational motion with imaging and spectral scanning cycles to achieve a seamless, high-resolution analysis of the material’s structural, thermal, and elemental characteristics.

[0056] The enclosure system housing the XRF analyzer and thermal imaging camera can be designed to rotate at specific angles, such as 30, 60, or 180 or 360 degrees, to optimize the analysis process by adjusting the orientation of the sensors relative to the sample. Similarly, the sample holding tray (1) may also be configured to rotate at adjustable angles, allowing multi-directional exposure to imaging and spectroscopic analysis. Depending on the desired analytical precision and operational requirements, either the enclosure system or the sample tray can rotate independently or in combination, ensuring optimal positioning for capturing detailed thermal profiles and elemental composition data. A skilled person in the art may configure the system to achieve an efficient balance between sample and sensor movement, allowing precise scanning while ensuring stability and minimizing distortions in the collected data.

[0057] Either the enclosure system housing the XRF analyzer and thermal imaging camera or the sample holding tray (1) can be rotatable, or both can rotate in combination, depending on the required analytical configuration. The enclosure system may bedesigned to rotate at specific angles, such as 30, 60, or 360 degrees, to adjust the positioning of the imaging and spectrometric devices for optimal data acquisition. Similarly, the sample tray (1) may also be configured to rotate at controlled angles, ensuring that different surfaces of the sample are exposed for comprehensive scanning. A skilled person in the art may determine the appropriate combination, wherein either the enclosure system or the sample tray rotates independently, or both rotate synchronously, allowing precise alignment of the sample with the imaging and spectroscopic tools for enhanced accuracy and efficiency in non-destructive analysis.

[0058] The present invention has been described with reference to specific embodiments and configurations; however, it will be apparent to a person skilled in the art that various modifications, adaptations, and alterations can be made without departing from the spirit and scope of the invention. The described system and method for nondestructive analysis of jewels, precious metals, ornaments, and stones integrate AI-based evaluation, machine learning, 3D imaging, thermal imaging, and XRF spectroscopy, but the invention is not limited to the exact structural arrangements or operational parameters disclosed. Different combinations of sensor placements, rotational mechanisms, data processing techniques, and material analysis methodologies may be implemented based on specific requirements. The scope of the invention is, therefore, to be determined solely by the appended claims, including any equivalents that may be encompassed within their meaning and range.

Claims

1. CLAIMS1. An integrated system for non-destructive analysis of jewels, precious metals, ornaments, and stones, comprising:a sample holding tray (1) for positioning the item;an enclosure housing an X-ray fluorescence (XRF) analyzer (5) and a thermal imaging camera (3);a power supply unit (4);an XRF spectrometer (5); anda mounting stand (7);characterized in thatthe sample holding tray (1) and the enclosure housing are rotatable at specific angles, including 30, 60, or 360 degrees;a 3D imaging camera (2) is arranged to capture high-resolution images from multiple angles for generating a three-dimensional model of the item; the thermal imaging camera (3) is configured to detect and analyze the thermal profile to identify impurities, mixed metals, or structural inconsistencies;a 360-degree rotating motor (6) is operably coupled to at least one of the sample holding tray (1) or the enclosure system, enabling multi-angle scanning for comprehensive evaluation; andan Al-based computational module configured to:- analyze acquired data from the 3D imaging camera (2), the thermal imaging camera (3), and the XRF spectrometer (5) using machine learning algorithms to determine the authenticity, type, weight, and estimated value of the item;- apply regression-based techniques to estimate the purity and material composition of the analyzed item; and- classify the analyzed item based on shape, design, and material composition using a training dataset of gemstones, metals, and ornaments.

2. The system as claimed in claim 1, wherein either the enclosure housing or the sample tray (1) is rotatable independently, or both are rotatable in combination to optimize imaging and spectroscopic analysis.

3. The system as claimed in claim 1, wherein the 3D imaging camera (2) is configured to generate a digital model of the item to facilitate automated classification, authentication, and valuation.

4. The system as claimed in claim 1, wherein the thermal imaging camera (3) continuously captures heat distribution patterns from multiple angles during rotation to detect internal defects, inclusions, or compositional anomalies.

5. The system as claimed in claim 1, wherein the XRF spectrometer (5) performs elemental composition analysis by emitting X-rays onto the rotating item, ensuring comprehensive exposure for accurate detection of fluorescence emissions.

6. The system as claimed in claim 1, wherein the 360-degree rotating motor (6) is configured to enable synchronized or independent movement of the sample tray (1) and enclosure system, ensuring precise alignment with imaging and spectroscopic tools.

7. The system as claimed in claim 1, wherein the system comprises a digital storage unit configured to store the 3D model, thermal imaging data, and elemental analysis results in a secure digital library for future reference.