Corundum Var. Sapphire Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka |
Adamite on Limonite Ojuela Mine, Mapimi, Durango, Mexico |
Opal (polished) Jalisco, Mexico |
Quartz "Faden" Dara Ismael Khan District, Waziristan, Pakistan |
Quartz, var. Herkimer Diamond Ace of Diamonds Mine, Herkimer County, New York |
Danburite rough and cut San Luis Potosi, Mexico |