The very rare, natural alexandrite shown here changes color from greenish brown in daylight to purplish red in incandescent light. 18k white gold ring with 3.08-ct, oval mixed-cut alexandrite and diamond side stones, 2.16 ctw. Photo courtesy of liveauctioneers.com and Westbury Auction Galleries.
Article: Gemology Career Options
Credit: Westbury Auction Galleries
|Natural or man made||Natural|