Two plant motif brooches also appeared at the same Christie's New York Rockefeller Plaza, Magnificent Jewels Sale held on April 11, 2001. These are lo...

Some Burma sapphire lots that appeared at Christie's New York Rockefeller Plaza Magnificent Jewels Sale held on October 16, 2007 are lots 120, 191, 23...

Lot 195, 196 and 293 are three human and animal motif brooches that apeared at Christie's New York Rockefeller Plaza, Magnificent Jewels Sale held on ...

Two Burma sapphire lots appeared at Christie's New York Rockefeller Plaza, Magnificent Jewels Sale, held on April 11, 2001. These lots are 338 and 302...

Thanks AnitaP for starting this thread. As you said several such pieces are featured at every public auction, and bringing together such pieces would ...

Dear Edgar,We have forwarded your request to Rob Weesner, mineral expert and dealer in minerals, who is a regular participant in our forums. His e-mai...

Demantoid is the green variety of Andradite Garnet. Andradite is Calcium Iron Silicate with formula Ca3Fe2(SiO4)3. When some of the Ferric ions in the...

The normal alexandrite lot 1524, that appeared at Christie's Jewels : The Hong Kong Sale, held on May 26, 2009 was an Alexandrite and DIamond Platinum...

Thanks Joan for your critical analysis of the Catseye Alexandrite Necklace highlighted by Maryjewel. Your observations are perfectly in order. The cat...

The catseye alexandrite and diamond necklace higlighted by Maryjewel is indeed a very rare piece of jewelry. But, what puzzles me most was how it was ...

Thanks AnitaP and rashid for your updates. With regards to the question raised by rashid, if a blue sapphire and diamond of equal volumes are consider...

The images of 49.47-carat, cut-cornered rectangular step-cut Ceylon blue sapphire and the 9.18-carat modified pear-shaped Ceylon blue sapphire uploade...

Two catseye alexandrite lots and a third normal alexandrite lot appeared at Christie's Jewels : The Hong Kong Sale held on May 26, 2009. The catseye a...