This necklace has a 9mm intense blue trolleite crystal framed with a delicate, thread-like wire wrap. The gemstone has a very unusual cut with a focal point at the center of the teardrop. This piece is delicate, and the stone can move out of the wire setting, but it can also be put back in place. The materials are hypoallergenic and free of common skin irritants. Handmade in Chicago. ✨ METAL OPTIONS: Solid sterling silver ✨ SIZING & SPECIFICATIONS: Chain length is typically 17-19 or 18-20 inches, including a two inch extender Custom lengths may be available upon request ✨ CARE INSTRUCTIONS: To maintain the beauty of your jewelry, avoid exposure to perfumes and chemicals. Gold filled and sterling silver jewelry can be cleaned if the jewelry begins to show tarnishing; however, we recommend some simple good habits to limit the need for cleaning. When you're not wearing your jewelry, store your pieces in a closed or airtight jewelry box, and keep your jewelry in dry places, away from humidity.