Join us at Gem Valley Sapphire/Garnet Mining and Jewelry for thrilling outdoor fun as you hunt for sparkling gemstones in a rainbow of colors! We provide the tools needed to sort through the concentrated gravel which is supplied directly to us by Montana's premier Sapphire and Garnet mines. We can also suggest heat treating and faceting services. Don't forget to take sacks of gravel home for even more fun! Gemstone jewelry is available. OPEN DAILY SEASONALLY Opening mid-May: 10 a.m. - 4 p.m. June, July & August: 9 a.m. - 5 p.m. Early to mid-Sept.: 10 a.m. - 4 p.m.