For centuries, Spinel has played the role of the impostor to Ruby and Sapphire, even deceiving royalty — the famed Black Prince’s Ruby in the British Crown Jewels is, in fact, a Spinel. Today, Spinel has carved out its own prestigious niche, competing with Ruby and Sapphire on the global stage, commanding prices up to five digits per carat. 

Discover the thrilling tale of Don Kogen’s discovery of the world’s largest Cobalt Spinel, a stunning 25.00-carat gem where even 3.00 carats is rare. Dive into this extraordinary journey and uncover the secrets of these captivating stones.