Citrine—the transparent, pale yellow to brownish orange variety of quartz—is rare in nature ... Citrine crystals occur in a wide range of sizes, and citrine sizes up to 20 carats are readily available ...

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.