Hope Diamond Grade

In December of 1988, a team from the Gemological Institute of America visited the Smithsonian to grade the great blue hope diamond using 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 which is common to blue hope diamonds. They described the color as a fancy dark grayish-blue. An examination on the same day 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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Hope Diamond Jewel

Harry Winston Inc. of New York City purchased Mrs. McLean's entire jewelry collection, including the Hope diamond, from her estate in 1949. This collection also included the 94.8-carat Star of the East diamond, the 15-carat Star of the South diamond, a 9-carat green diamond, and a 31-carat diamond which is now called the McLean diamond.

For the next 10 years the Hope diamond was shown at many exhibits and charitable events world wide by Harry Winston Inc., including as the central attraction of their Court of Jewels exhibition. On November 10, 1958, they donated the Hope diamond to the Smithsonian Institution, and almost immediately the great blue stone became its premier attraction.
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