Despite the widespread belief that green gemstones are common, naturally occurring green gemstones are actually quite rare. For most of time since its discovery in 1988, Russian diopside was sourced from only one location, Russia's Eastern Siberia. When it first appeared in the European gemstone market, dealers instantly raved about the attractive glowing green color of Russian diopside and began comparing it to other more expensive green gemstones. 1.30ct set here in gold finished sterling silver, accented with 14 Diamondeau? - flawless simulated diamond. A real investment piece.