Boulder opal stone plugs! These plugs are natural and handcrafted with marble-like, opal designs throughout. This pair you see here is what you will get when you purchase. This is version 1 of 4 in this 5/8 size. Size is 5/8" (15.8mm). Wearable area is 8mm. Full length is about 9mm-10mm. Handle with care. Sold in pairs (2 pieces). For healed lobes.