Joel Arthur Rosenthal who prefers to be known by his initials JAR, is a reclusive contemporary American/French Jewelry designer, born in Bronx, New Yo...

Lot 61 and Lot 191 are two Burma Sapphire lots that appeared at Christie's Jewels : The Geneva Sale held on May 13, 2009. Lot 61, A Sapphire and Diamo...

Like the Richelieu Sapphires, another pair of Kashmir sapphire and diamond ear pendants, described as "A Pair Of Impressive Sapphire And Diamond Ear P...

Wow ! The image of the Ceylon catseye alexandrite is indeed very stunning. I never knew that catseye alexandrites can be so stunningly beautiful. Than...

One of the most stunning alexandrites to appear at a public auction, was the 15.35-carat, cushion modified brilliant-cut alexandrite, that appeared at...

A stunning Brazilian alexandrite weighing just 11.66 carats and mounted on a platinum ring appeared at the Christie's Geneva Magnificent Jewels Sale h...

I just thought of computing the ppc values of the six Ceylon blue sapphires given above. 1) 102.61 carats - USD 4,203,118 PPC - USD 40,9622) 18.8 c...

The Paraiba Parrot Brooch is another interesting example of a jewelry design with an animal motif. The eye of the parrot is set with a 7-carat faceted...

Apart from the commonest colors of yellow, yellowish-brown, golden-brown, pale-blue and colorless, in what other colors do natural topaz exist ?

The diamonds no doubt are original Golconda stones, and originated before the 1750s, when the Indian mines were finally abandoned. Apart from the diam...

Thanks for the detailed reply on the role played by provenance in the valuation of a pearl.

What role does provenance play in the valuation of a pearl ?

What is the historic provenance associated with the pearl ?