Since the discovery of the Yogo Sapphire in 1878 it has been prized for its deep color and natural beauty. This, along with yogos extreme rarity has lead to it being prized above diamonds! Yogo sapphires are natural and untreated, and are only mined here in Montana. At Yogo Jewelry Co. you can select Yogo Sapphires from hundreds of jewelry designs, in earrings, pendants, rings, and bracelets, as well as unset stones. Come visit us downtown to find great prices on top quality stones. You can also get something for that someone special with a custom piece from Yogo Jewelry Co. 1219 Central Avenue, Great Falls.