Ball-set Opal Navel Curve Basic be aware that glass can

be aware that glass can break when put under stresses such as being dropped

Stone Plugs - African Serpentine

but you can still wear your jewelry through them

From the maker: Through combining flame working on this glass with cold working techniques

Ball-set Opal Navel Curve Basic be aware that glass can14 ga. 3 8" Stainless Steel Navel Curve Description & Features: Not a fan of prong's? This ball setting is wrapped all the way around the opal cabochon. Standard: 6mm fixed Ball Set Opal Cabochon bottom with (1) 3mm matching threaded top 7. 8mm fixed Ball Set with (1) 6mm Opal Cabochon bottom with matching 4mm fixed Ball Set with (1) 3mm Opal Cabochon threaded top Mini: 4mm fixed Ball Set Opal Cabochon bottom with (1) 3mm matching threaded top 5. 5mm