Decorative Structure with Faceted Microstructure for Thin Gemstone Effects

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional faceted gemstones are bulky, prone to air bubble formation when embedded in polymers, have large dimensional variations, and are heavy, making them unsuitable for applications requiring low installation depth and high surface coverage, with costs being prohibitive.

Innovation Solution

A decorative structure featuring a support with a microstructure comprising grooves forming facets, optionally combined with a reflective or partially reflective layer, which splits incident light into spectral colors, mimicking gemstone optical effects while being lightweight and cost-effective.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If conventional faceted gemstones are used to achieve desirable optical effects (fire, light return, scintillation), then the optical properties are improved, but the weight and volume increase significantly

Engineering Contradiction:

Improveoptical effects (fire, light return, scintillation)VSAvoidweight

Core Design Contradiction:

Illumination intensityVSWeight of moving object

Solution Approach 1:

The gemstone is divided into two functional parts: a flat back portion for mounting and a crown portion with facets for optical effects. This segmentation allows the heavy pavilion to be removed while retaining the light-returning crown, significantly reducing weight while maintaining optical performance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pavilion (lower part) is extracted from the gemstone structure, leaving only the crown (upper part) with the essential facets. This extraction removes the unnecessary volume that contributes to weight while preserving the faceted geometry required for fire, light return, and scintillation effects.

Inventive Principle:

Principle #2Taking out (Extraction)

2Illumination intensity

If conventional faceted gemstones are used to achieve desirable optical effects, then the optical properties are improved, but the height and volume increase making them unsuitable for low installation depth applications

Engineering Contradiction:

Improveoptical effects (fire, light return, scintillation)VSAvoidheight

Core Design Contradiction:

Illumination intensityVSLength of moving object

Solution Approach 1:

The gemstone is divided into a flat back portion for mounting and a crown portion with facets for optical effects. This segmentation allows the heavy pavilion to be removed while retaining the light-returning crown, significantly reducing weight while maintaining optical performance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention transitions from a three-dimensional volumetric gemstone to a more two-dimensional flat-back structure. By flattening the back and removing the pavilion, the height dimension is reduced while the crown facets maintain their optical functionality through optimized geometry.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Illumination intensity

If conventional faceted gemstones are used, then the optical properties are improved, but the dimensional variations (5-10% of diameter) create highly variable surface profiles

Engineering Contradiction:

Improveoptical propertiesVSAvoiddimensional variations

Core Design Contradiction:

Illumination intensityVSManufacturing precision

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The flat back portion provides a uniform mounting surface with controlled dimensions, while the crown portion contains the faceted geometry for optical effects. This local differentiation allows precise control of the mounting surface dimensions while maintaining optical performance in the crown region.

Inventive Principle:

Principle #3Local quality

4Illumination intensity

If conventional faceted gemstones are used to achieve desirable optical effects, then the optical properties are improved, but the cost increases prohibitively

Engineering Contradiction:

Improveoptical effects (fire, light return, scintillation)VSAvoidcost

Core Design Contradiction:

Illumination intensityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention creates a simplified copy of the essential gemstone features (crown facets) without replicating the full three-dimensional pavilion structure. This copying approach maintains the optical functionality while using less material and reducing manufacturing complexity and cost.

Inventive Principle:

Principle #26Copying

5Illumination intensity

If conventional faceted gemstones are embedded in polymers, then the optical properties are improved, but air bubbles form around the pavilion degrading the appearance

Engineering Contradiction:

Improveoptical propertiesVSAvoidair bubbles

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The removal of the pavilion converts the potential harm of air bubble formation into a benefit by eliminating the cavity that would trap bubbles. The flat back design allows direct contact with the polymer substrate, ensuring complete filling and eliminating air pockets that would degrade appearance.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The decorative structure achieves aesthetically pleasing optical properties similar to gemstones with reduced weight and thickness, allowing for uniform appearance, ease of application, and lower production costs.

Implementation Method 1

the facets are capable of splitting incident light into spectral colours

Methodology Applied

Scientific EffectRefraction: Refraction

Implementation Method 2

the facets are capable of splitting incident light into spectral colours

Methodology Applied

Scientific EffectDispersion: Dispersion (of waves)

Implementation Method 3

a reflective or partially reflective layer configured to reflect at least some of the light that is incident on and/or passes through the microstructure

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentEP3998890B1Decorative structure

Publication Date: 2025.09.24 D SWAROVSKI & CO

Figure 1A~1C
Figure 2A~2B
Figure 3A~3C

AI summary

A decorative structure (20) comprising a planar support (22) and a faceted microstructure (24) on at least one side of the planar support (22) is provided. The decorative structure (20) may further comprise an at least partially reflective layer (26) configured to at least partially reflect light that passes through the microstructure (24). The faceted microstructure (24) comprises a plurality of grooves (28) creating a pattern of facets (30) over the surface of the support (22), such that the microstructure (24) is capable of splitting incident light into spectral colours. In embodiments, the grooves (28) have a triangular or V-shaped profile. Methods of making a decorative structure(20) and articles incorporating the decorative structure (20) are also described.