This is a 14k yellow gold ring with a large cushion cut Green Amethyst. Green Amethyst's gemological term is Prasiolite which is in the quartz family. This beautiful gem is surrounded by 27 round cut Champagne Diamonds with a row of 8 White Diamonds down each side. The setting is impecably done with a pierced or cut out pattern. The Green Amethyst is 10mm by 10mm by 7mm which approximates this gem at 4 Carats. The 27 Champagne diamonds are approximately .03 carats each totaling .81 carats. The 16 White Diamonds are also .03 each, totaling .48 carats. The ring is marked 14k EMA and weighs 6.4 grams or 4.1 pennyweights. It is in excellent condition.