Heart Cut
The most important elements to consider with the heart shape are the quality of the curved cut and finish as these determine the sparkle of the gem.
The most important elements to consider with the heart shape are the quality of the curved cut and finish as these determine the sparkle of the gem.
The heart shape is usually comprised of between 56 and 58 facets, although the number of main pavilion facets may vary between 6, 7 and 8. Additionally, heart shapes are sometimes cut with “French tips,” which replace the large bezel facet at the point with star and upper girdle facets. French tips are also used in the Marquise and Pear shapes. Heart shapes may differ slightly in appearance depending on their make or structure.
The traditional heart shape should have a ratio between 0.90 and 1.10 and be absolutely symmetrical with the lobes (top arches) of even height and breadth, although these specifications may be altered according to personal preferences.
In determining the length to width ratio for heart shapes, the width is measured at the widest point of the shape from the edge of one lobe to the other. In addition, the heart shape can suffer from a so-called “bow-tie effect” when light passing through the diamond casts a shadow across the central facets of the stone.
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