he Châtelaine® Collection is a perfect fusion of David and Sybil Yurman’s combined art—the marriage of a sculptor and a painter—form and color.   David Yurman earrings from the Chatelaine® Collection. Gold plated posts, sterling silver hardware and settings. Amethyst, black onyx, prasiolite or blue topaz. Gemstone in prong settings with diamonds. 0.06 total diamond carat weight. 2.20 total black onyx carat weight 1.80 total prasiolite carat weight 2.40 total blue topaz carat weight 1.80 total amethyst carat weigh Post backs for pierced ears. Approx. 6mm. Imported. Care Instructions: Use the provided polishing cloth to gently wipe this item clean, then remove any remaining tarnish with mild diluted soap. Rinse with warm water, dry with a clean towel and store it in its jewelry pouch.