Oval Diamond Hearts and Arrows Pattern via Asymmetric Facets
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Solution Overview
Problem
Conventional diamond cutting techniques cannot produce a hearts and arrows pattern in oval-shaped diamonds due to their non-symmetrical geometry, as they require exact angle degrees and perfect symmetry, which is impossible to achieve in shapes other than round diamonds.
Innovation Solution
The oval-shaped diamond is cut with eight main crown facets and eight main pavilion facets of unequal size, with pavilion half facets polished at specific angle degrees, and includes subsidiary pavilion facets to create a non-uniform girdle thickness, allowing for alignment and polishing within narrow ranges to produce a hearts and arrows pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional diamond cutting techniques are used on oval-shaped diamonds, then the non-symmetrical geometry is maintained, but a hearts and arrows pattern cannot be produced
Solution Approach 1:
The patent applies asymmetry by accepting the oval shape's inherent non-symmetry and designing facet arrangements that work with this asymmetry rather than forcing symmetry. The crown and pavilion facets are asymmetrically arranged to compensate for the oval geometry, enabling the hearts and arrows pattern to emerge despite the non-symmetrical overall shape.
Solution Approach 2:
The patent applies local quality by assigning different facet angles and arrangements to different regions of the oval diamond. The crown facets have specific angles optimized for light reflection, while the pavilion facets have angles optimized for light refraction and arrow formation. Each region is locally optimized to contribute to the overall hearts and arrows pattern.
2Manufacturing precision
If exact angle degrees are required for all facets, then a hearts and arrows pattern is achieved in round diamonds, but this is impossible to achieve in oval shaped diamonds
Solution Approach 1:
The patent applies parameter changes by adjusting the facet angles from the conventional round diamond specifications to values optimized for oval geometry. The crown facets use angles between 30-35 degrees and the pavilion facets use angles between 40-45 degrees, which are modified parameters that work with the oval shape's geometry while still producing the hearts and arrows pattern.
Solution Approach 2:
The patent applies partial action by achieving the hearts and arrows pattern through specific critical facets rather than requiring all facets to meet perfect round diamond specifications. By optimizing the key crown and pavilion facets that are most important for light handling and pattern formation, the patent achieves the desired effect without requiring excessive precision across all facets.
3Illumination intensity
If traditional oval diamond cutting methods are used, then the non-symmetrical geometry is maintained, but optical light handling properties are compromised
Solution Approach 1:
The patent applies segmentation by dividing the diamond into distinct functional regions: the crown portion for light reflection and the pavilion portion for light refraction. Each segment is independently optimized with specific facet angles and arrangements to maximize light handling performance while maintaining the overall oval geometry.
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
This approach enables the creation of a hearts and arrows pattern in oval-shaped diamonds, matching the optical light handling properties of round diamonds, enhancing brilliance and beauty while deviating from traditional cutting methods.
Implementation Method 1
the oval shaped diamond with its facets cut to generate a hearts and arrows pattern when exposed to light
Implementation Method 2
optical light handling properties
Data Source
AI summary
An oval shaped diamond, adapted to display a hearts and arrows pattern when exposed to light characteristic of the hearts and arrows pattern in a round diamond, comprising: an oval shape having two long sides symmetrical to each other, two short sides symmetrical to each other and four corner sides symmetrically located between the long sides and the short sides respectively, eight main crown facets of unequal size and eight main pavilion facets of unequal size, sixteen pavilion half facets; a girdle of non-uniform thickness separating the crown and pavilion facets and two subsidiary pavilion facets in alignment with each other on the long sides of the diamond adjacent a main pavilion facet.