Our Mini Crystal Trinity Studs, now available in implant grade titanium for 24/7 waterproof, sweatproof, lifeproof wear, team a trio of stones to represent the chain of generations - and how we're all connected, in the past, present, and future. Also available in solid 14k gold, as a titanium flat back for cartilage piercings and our signature Crystal Trinity Nap Earrings. SIZE & FIT Earring top: 3.5mm wide Post gauge: 20g (standard piercing) Sphere backings — a secure, adjustable alternative to our flat-back styles Best for first or second lobe MATERIALS & CARE Materials: Medical-grade (ASTM F-136) titanium with cubic zirconia crystals. Hypoallergenic and safe for sensitive skin. Finish: Our jewelry is bonded with Titanium Nitride PVD. Titanium Nitride is a hypoallergenic material that is more durable and resistant to wear than traditional gold plating. PVD coating is also more environmentally friendly than traditional plating. Care: Earring backings feature a silicone core for a comfortable, secure fit. To keep them performing at their best, avoid prolonged exposure to cosmetics and direct heat. Remove and clean your earrings weekly to prevent buildup from body oils and everyday wear. Waterproof and tarnish resistant. To maintain shine, polish with a soft cloth. SHIPPING & RETURNS Free standard US shipping on orders over $150 Easy returns and exchanges