Quartz, var. Herkimer Diamond Ace of Diamonds Mine, Herkimer County, New York |
Adamite on Limonite Ojuela Mine, Mapimi, Durango, Mexico |
Beryl var. Aquamarine (etched) Itatia Mine, Minas Gerais, Brazil |
Opal (rough and cut) Shoa Province, Ethiopia |
Opal (polished) Jalisco, Mexico |
Corundum var. Sapphire Potanino Mine, Ilmen Mountains, Russia |