Description
The Napoleon Diamond Necklace consists of 28 mine cut diamonds set into a single thread, with a fringe of alternating pendeloque and briolettes diamond cuts. The five pear-shaped pendoloques are each mounted below a small brilliant cut diamond. The four ovaline pendeloques are mounted above designs which incorporate 23 brilliant cut diamonds each. Each briolette mounting is set with 12 rose cut diamonds.
While the gems of the Napoleon Diamond Necklace have never been professionally graded by a lapidary (as they have never been removed from their mountings), infrared spectroscopic analysis of the diamonds has shown that they are primarily Type Ia. However, 13 of the 52 largest diamonds in the necklace are of the rare Type IIa variety. A number of the Type Ia diamonds show indications of sulfide crystal imperfections.
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