The beauty of each Syna piece is its striking simplicity. These versatile 18k gold amethyst Syna earrings-detailed with diamonds-will take you from the beach, to brunch, to the ballet. From the Syna Baubles Collection. 18-karat yellow gold. Champagne pave diamond dome, 6mm. Polished amethyst cabochon drop, 12mm. Amethyst, 15.0 total carat weight. Diamonds, 0.50 total carat weight. 7/8"L overall.