Heart Shaped Diamond Hearts and Arrows Pattern
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Solution Overview
Problem
Conventional heart-shaped diamonds do not exhibit a hearts and arrows pattern when exposed to light due to their asymmetrical shape and irregular facet alignment, which differs from the symmetrical and aligned facets required in round cut diamonds for this optical effect.
Innovation Solution
A heart-shaped diamond is cut with eight symmetrically aligned main crown facets, eight main pavilion facets at a 45° angle, and 16 pavilion half facets arranged in pairs at a 22.5° angle, with a centrally located culet and a varying girdle thickness, to achieve symmetry and alignment similar to round cut diamonds, thereby displaying a hearts and arrows pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a diamond is cut into a heart shape with conventional asymmetrical facets, then the diamond displays a romantic heart shape, but it cannot generate a hearts and arrows pattern when exposed to light
Solution Approach 1:
The patent applies asymmetry in reverse - it uses symmetrical facet arrangement (8 main crown facets and 8 main pavilion facets arranged symmetrically) within an asymmetrical heart shape. This creates a contradiction resolution where the heart shape maintains its romantic asymmetry while the internal facet structure achieves the symmetry required for hearts and arrows pattern generation.
Solution Approach 2:
The patent applies local quality by differentiating between the overall heart shape (asymmetrical) and the local facet arrangement (symmetrical). The 8 main crown facets and 8 main pavilion facets are arranged with precise symmetry and specific angle relationships (33.6°-35.2° for crown, 40.55°-41.2° for pavilion) to create the optical pattern, while the overall silhouette remains heart-shaped.
2Illumination intensity
If a heart shaped diamond is cut with symmetrical facets to achieve hearts and arrows pattern, then the optical brilliance is improved, but the traditional heart shape characteristics are compromised
Solution Approach 1:
The patent resolves this contradiction by maintaining asymmetry at the macro level (heart shape silhouette) while introducing symmetry at the micro level (facet arrangement). The 8 main crown facets and 8 main pavilion facets are symmetrically arranged to generate the hearts and arrows pattern, while the overall diamond silhouette preserves the traditional heart shape.
Solution Approach 2:
The patent resolves the contradiction by operating in different dimensional levels - the heart shape exists in the external silhouette dimension, while the symmetrical facet arrangement operates in the internal optical dimension. This allows both the traditional heart shape and the hearts and arrows pattern to coexist by addressing them at different dimensional levels.
3Ease of manufacture
If conventional heart shaped diamond cutting methods are used, then the cutting process is simpler, but the diamond does not exhibit the hearts and arrows pattern
Solution Approach 1:
The patent applies parameter changes by specifying precise angle ranges (crown facets: 33.6°-35.2°, pavilion facets: 40.55°-41.2°) and symmetry requirements for the 8 main facets of each. These parameter specifications transform the conventional simple heart cut into a precision-cut diamond that generates the hearts and arrows pattern while maintaining the heart shape.
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 heart-shaped diamond achieves a hearts and arrows pattern when exposed to light, matching the brilliance and optical properties of round cut diamonds, despite its asymmetrical shape, by adhering to specific facet alignment and angle requirements.
Implementation Method 1
when exposed to light, displays a hearts and arrows pattern characteristic of the hearts and arrows pattern in a round diamond
Implementation Method 2
The symmetry of a near perfect round cut diamond provides brilliance, color and optical light handling properties
Data Source
AI summary
A heart shaped diamond possessing a hearts and arrows pattern characteristic comprising: eight main crown facets symmetrically aligned relative to one another, with each of the eight main crown facets having a straight edge in parallel alignment with a straight edge of another main crown facet disposed opposite thereto; eight main pavilion facets aligned at a fixed given angle of approximately 45° to each other and converging at a common point corresponding to the center of the diamond; sixteen pavilion half facets aligned at 22.5° with respect to each other, a girdle which is non-uniform and has a substantially unequal thickness throughout the diamond, a table facet, and a multiple number of crown star facets in an arrangement surrounding the table facet.