The technical name for Heart Cut Diamond Stone is the ‘Heart-Shaped Modified Brilliant’, based upon its shape and modifications of the traditional round brilliant configuration. Heart shaped diamonds are actually pear shaped diamonds with a distinctive cleft on top instead of the rounded edges. The heart shaped diamond can be quite fiery with excellent sparkle. The shape of the heart makes this diamond highly desirable for romantic occasions such as Valentine's Day and anniversaries. It is often referred to as one of the fancy cut diamonds and colored diamonds are often used for this special cut.
The exact origins of the heart brilliant are unknown although being a modified brilliant cut it may have appeared as early as the 16th century. However, gems which would today be classified as ‘triangular with rounded corners’ or ‘drops’ were at one time described as being heart-shaped. Indeed, this is evident from the many descriptions in French inventories dating from the middle of the seventeenth century. The first recorded heart shape diamond appears in a portrait entitled “The Gonzaga Princess,” painted circa 1605 by Frans Pourbus the younger. The large piece of jewellery on the princess’s left sleeve contains a variety of different cuts, some of which are thought to be versions of the heart-like ‘drops’ popular in France at the time. The heart shape is also mentioned in a book written in 1655 by Jean-Baptiste Tavernier, the French merchant-traveller who found his fortune in the precious stone trade and famously brought the Hope Diamond to France. In the text, he recalls seeing the “Heart Diamond,” a 36-carat heart-shaped brilliant in an ornament in the treasure of Aurangzeb, in India.
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 a brilliant cut which typically contains 59 facets but that can be modified so that the number of pavilion main facets may be 6, 7, or 8.
The length-to-width ratio will determine the diamond's outline, or what it will look like when viewed from the top. A heart-shaped stone is usually proportioned with equal length and width, approximating a ratio of 1:1. A length to width ratio of between 0.90:1 and 1.15:1 is preferred. The ratio should not fall below 0.80:1 or exceed 1.20:1 .
The shadow caused by the bow-tie effect can be reduced by altering the depth of the pavilion, and adjusting the angles of the table and facets to better diffuse light in the central area. This effect also occurs in the Pear, Marquise and Oval shapes.
The shadow caused by the bow-tie effect can be reduced by altering the depth of the pavilion, and adjusting the angles of the table and facets to better diffuse light in the central area. This effect also occurs in the Pear, Marquise and Oval shapes.
Heart shaped diamonds are sometimes considered romantic, but they can be difficult to cut. The skill of the cutter greatly determines the beauty of heart shaped diamonds.
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