Created in a lab using the identical chemical formula as real (ground) opals, these gorgeous lab-grown opals are both affordable and less fragile. Iridescent flash adds a changing array of rainbow color. The heart cabochon is 10x10mm and slightly puffed and set in an 18x14mm sterling silver heart frame. I added a matching 4mm crystal to the ear wires. 1-3/8" (35mm) long from the top of the sterling ear wires. Matching necklace sold separately # 325118278613254144 Gift-ready in either an organza bag (default) or gift box upon request. Packaging styles change with availability.