The Hope Diamond is a famous jewel, and with good reason. It's ginormous! And it's beautiful. And for the first time ever, it is being displayed next to the Wittelsbach-Graff Diamond, which - at 31.06 carats, is just as impressive.
WEIGHT: 45.52 carats
CLARITY: VS1. Whitish graining is present.
COLOR: Natural fancy deep grayish-blue
CUT: Cushion antique brilliant with a faceted girdle and extra facets on the pavilion.
DIMENSIONS: Length: 25.60 mm, Width: 21.78 mm, Depth: 12.00 m
From the Smithsonian Website: The history of the stone that was eventually named the Hope diamond began when the French merchant traveller, Jean Baptiste Tavernier, purchased a 112 3/16-carat diamond. This diamond, which was most likely from the Kollur mine in Golconda, India, was somewhat triangular in shape and crudely cut. Its color was described by Tavernier as a "beautiful violet."
Tavernier sold the diamond to King Louis XIV of France in 1668 with 14 other large diamonds and several smaller ones. In 1673 the stone was recut by Sieur Pitau, the court jeweler, resulting in a 67 1/8-carat stone. In the royal inventories, its color was described as an intense steely-blue and the stone became known as the "Blue Diamond of the Crown," or the "French Blue." It was set in gold and suspended on a neck ribbon that the king wore on ceremonial occasions.
The weight of the Hope diamond for many years was reported to be 44.5 carats. In 1974 it was removed from its setting and found actually to weigh 45.52 carats. It is classified as a type IIb diamond, which are semiconductive and usually phosphoresce. The Hope diamond phosphoresces a strong red color, which will last for several seconds after exposure to short wave ultra-violet light. The diamond's blue coloration is attributed to trace amounts of boron in the stone.
In the pendant surrounding the Hope diamond are 16 white diamonds, both pear-shapes and cushion cuts. A bail is soldered to the pendant where Mrs. McLean would often attach other diamonds including the McLean diamond and the Star of the East. The necklace chain contains 45 white diamonds.
In December of 1988, a team from the Gemological Institute of America visited the Smithsonian to grade the great blue stone according to present day techniques. They observed that the gem shows evidence of wear, has a remarkably strong phosphorescence, and that its clarity is slightly affected by a whitish graining that is common to blue diamonds. They described the color as fancy dark grayish-blue. In 1996, after another examination they described the color as fancy deep grayish-blue. An examination on the same day in 1988 by another gemologist using a very sensitive colorimeter revealed that there is a very slight violet component to the deep blue color which is imperceptible to the naked eye. Still, one can only wonder that the original 112 3/16-carat stone bought by Tavernier was described as "un beau violet" (a beautiful violet).
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