Choose one of these miraculous, Montana Agate Stones for your original, one-of-a-kind, made-to-order Montana Agate Prong Necklace. These Montana Agate Stones are so gorgeous - each will be beautiful as the focal for this minimal, .925 Sterling Silver prong setting. Sophisticated. Glamorous. One of a Kind. This stunning Montana Agate stone is prong set in .925 Sterling Silver with a pierced back to see nature's beautiful patterns in the stone. Price includes .925 Sterling Silver Chain - removable Silversmith Rings, 11 Stone, Jasper Ring, Montana Agate, Dendritic Agate, Simple Bracelets, Boho Pendant, 925 Sterling Silver Chain, Agate Pendant