Pink to red spinel is in high demand among gem connoisseurs. - Courtesy a Private Collector and Mona Lee Nesseth, Custom Estate Jewels Spinel, like garnet and diamond, is singly refractive, with the ...

This selection of gems from Ouro Prêto, Brazil, and Russia's Ural Mountains, displays the golden orange to pinkish red color range of precious topaz. The gems range from 7.61 to 14.33 carats in size.

This advertisement has not loaded yet, but your article continues below. Images of the tests showed what appeared to be a BMW sedan being destroyed and old models of tanks being blown up More than ...