Danburite rough and cut San Luis Potosi, Mexico |
Corundum Var. Sapphire Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka |
Quartz var. Faden Dara Ismael Khan District, Waziristan, Pakistan |
Quartz "Faden" Dara Ismael Khan District, Waziristan, Pakistan |
Adamite on Limonite Ojuela Mine, Mapimi, Durango, Mexico |
Garnet var. Hessonite Jeffrey Mine, Asbestos, Quebec, Canada |