Gems24GemsMinerals35MineralsSemiprecious spiral35Semiprecious spiralAzurite24AzuriteCarnotite (image by Rob Lavinsky)35Carnotite (image by Rob Lavinsky)Natrolite (image by Didier Descouens)24Natrolite (image by Didier Descouens)Hessonite (image by Aangelo)48Hessonite (image by Aangelo)Citrine (image by cobalt123)40Citrine (image by cobalt123)Fluorite35FluoriteOpal (image by Hannes Grobe)40Opal (image by Hannes Grobe)Tourmaline (image by Rob Lavinsky)42Tourmaline (image by Rob Lavinsky)Beryl (image by Rob Lavinsky)35Beryl (image by Rob Lavinsky)Rubellite (image by Hannes Grobe)24Rubellite (image by Hannes Grobe)Amethyst 3 (by Rob Lavinsky)289Amethyst 3 (by Rob Lavinsky)Amethyst 2 (by Rob Lavinsky)120Amethyst 2 (by Rob Lavinsky)Amethyst 1 (by Rob Lavinsky)56Amethyst 1 (by Rob Lavinsky)Chalcedon (image by Elya)35Chalcedon (image by Elya)Agat36AgatPink quartz (image by Rob Lavinsky)35Pink quartz (image by Rob Lavinsky)Amethyst (by Rob Lavinsky)36Amethyst (by Rob Lavinsky)