This Aura Agate is so stunning I feel in love with it the second we saw it. Sourced from a local mineral and crystal supplier Silver Post in Downtown Summerlin they work directly with the mines there product is top quality having been in this business for over 50 years they are our preferred crystal supplier. The bail on this stone is sterling silver platted. I paired it with a sliver color large O ring and an antique bronze chain. We nick named it The Mr. T Geode Necklace. There is no clasp it is just as lid over the head style long necklace.