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细节
A MAGNIFICENT UNMOUNTED DIAMOND
The heart-shaped diamond weighing 56.15 carats, in red leather fitted case
Accompanied by report no.5121769493 dated 5 January 2011 from the GIA Gemological Institute of America stating that the diamond is D colour, Internally Flawless clarity, with Excellent polish and Excellent symmetry; and a letter stating that the diamond is Type IIa
The heart-shaped diamond weighing 56.15 carats, in red leather fitted case
Accompanied by report no.5121769493 dated 5 January 2011 from the GIA Gemological Institute of America stating that the diamond is D colour, Internally Flawless clarity, with Excellent polish and Excellent symmetry; and a letter stating that the diamond is Type IIa
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Heart-shaped diamonds are often referred to as an extremely popular fancy cut and the ultimate representation of love. The most romantic of all diamonds, they are highly sought-after for very special occasions such as engagements and anniversaries.
Diamonds became popular as ornaments in jewellery in the 1400s and the different techniques and styles of diamond cuts were gradually developed over many years. In 1475, Lodewyk van Bercken (or van Berquem), a Flemish stone-polisher from Bruges, introduced the concept of absolute symmetry in the placement of facets on the stone. His minutious and precisely studied advancements resulted in the first pear-shaped Pendeloque or Briolette-cut, a revolutionary breakthrough on shape, design and cutting excellence.
The Heart-cut can be closely related to the Pendeloque. Its appearance often begins as a pear shape, the possible inclusions located ideally in the center of the rounded end that the diamond cutter will flatten and indent with a cleft, the girdle widened until the length is approximately equal to the width. It is essential for a heart-shaped diamond to have a highly skilled cutter, to insure that the distinctive lobes are balanced, smooth and well defined, while retaining a brilliant shine. Consisting of minimum fifty-eight facets, the result is full of fire, comparable to the traditional round brilliant-cut. According to gemmologists, the ideal length-to-width ratio of a heart-shaped diamond should be approximately 1 to 1 in order to exhibit the best possible brilliance. However, there are many heart-shaped diamonds which are cut much narrower and much wider than the ideal proportions, primarily depending on the attributes of each particular rough diamond, making of every perfectly cut hearts a rarity.
The 56.15 carat heart-shaped diamond presented today exhibits all the characteristics of perfection. It is of D colour, Internally Flawless clarity, Excellent polish and symmetry, and belongs to the elite of the Type IIa diamonds.
Thus, a Perfect heart.
Diamonds became popular as ornaments in jewellery in the 1400s and the different techniques and styles of diamond cuts were gradually developed over many years. In 1475, Lodewyk van Bercken (or van Berquem), a Flemish stone-polisher from Bruges, introduced the concept of absolute symmetry in the placement of facets on the stone. His minutious and precisely studied advancements resulted in the first pear-shaped Pendeloque or Briolette-cut, a revolutionary breakthrough on shape, design and cutting excellence.
The Heart-cut can be closely related to the Pendeloque. Its appearance often begins as a pear shape, the possible inclusions located ideally in the center of the rounded end that the diamond cutter will flatten and indent with a cleft, the girdle widened until the length is approximately equal to the width. It is essential for a heart-shaped diamond to have a highly skilled cutter, to insure that the distinctive lobes are balanced, smooth and well defined, while retaining a brilliant shine. Consisting of minimum fifty-eight facets, the result is full of fire, comparable to the traditional round brilliant-cut. According to gemmologists, the ideal length-to-width ratio of a heart-shaped diamond should be approximately 1 to 1 in order to exhibit the best possible brilliance. However, there are many heart-shaped diamonds which are cut much narrower and much wider than the ideal proportions, primarily depending on the attributes of each particular rough diamond, making of every perfectly cut hearts a rarity.
The 56.15 carat heart-shaped diamond presented today exhibits all the characteristics of perfection. It is of D colour, Internally Flawless clarity, Excellent polish and symmetry, and belongs to the elite of the Type IIa diamonds.
Thus, a Perfect heart.