Syna. Baubles 18k Large Chrysoprase Earrings. The beauty of each Syna piece is its striking simplicity. These versatile 18k gold and chrysoprase Syna earrings will take you from the beach, to brunch, to the ballet. From the Syna Baubles Collection. 18-karat yellow gold. Polished chrysoprase cabochon drop, 13mm. Chrysoprase, 15.0 total carat weight. 3/4"L overall. French wire backs.