250 Carat Green Amethyst Natural Loose Gemstones Wholesale Lot w/ Beverly Oaks LLC Exclusive Certificate of Authenticity NATURAL REAL GREEN AMETHYST GEMSTONES WHOLESALE LOT FOR JEWELERS 250 CARAT GREEN AMETHYST, LARGE OVAL AND PEAR CUTS 3 CARAT AVERAGE STONES QUARTZ CLASS GEMSTONE HARDNESS 6.5 TO 7 ON MOHS SCALE