James St. John:
Silver in agate (Amethyst Vein, Tertiary; Last Chance Mine, Mineral County, Colorado, USA) 1
James St. John:
Silver in agate (Amethyst Vein, Tertiay; Last Chance Mine, Mineral County, Colorado, USA) 2
James St. John:
Amethyst (purple quartz) 1
James St. John:
Amethyst after calcite (Santino Mine, Artigas, Uruguay)
James St. John:
Amethyst (Boekenhoutshoek area, South Africa)
James St. John:
Fake geode - chalcopyrite on amethyst (Morocco) 1
James St. John:
Fake geode - chalcopyrite on amethyst (Morocco) 2
James St. John:
Fake geode - chalcopyrite on amethyst (Morocco) 3
James St. John:
Fake geode - chalcopyrite on amethyst (Morocco) 4
James St. John:
Fake geode - chalcopyrite on amethyst (Morocco) 5
James St. John:
Fake amethyst geode (Morocco)
James St. John:
Amethyst (purple quartz) 2
James St. John:
Amethyst (purple quartz) 3
James St. John:
Amethyst (purple quartz) 4
James St. John:
Amethyst (Uruguay) 1
James St. John:
Amethyst (Uruguay) 2
James St. John:
Amethyst (Uruguay) 3
James St. John:
Amethyst (Uruguay) 4
James St. John:
Amethyst (Uruguay) 5
James St. John:
Amethyst (Uruguay) 6
James St. John:
Amethyst (Uruguay) 7
James St. John:
Amethyst (Colorado, USA) 1
James St. John:
Amethyst (Colorado, USA) 2
James St. John:
Amethyst (Delaware County, Pennsylvania, USA)
James St. John:
Amethyst (Russia)
James St. John:
Amethyst (Brazil) 1
James St. John:
Amethyst (Brazil) 2
James St. John:
Amethyst (Brazil) 3
James St. John:
Amethyst (Brazil) 4
James St. John:
Amethyst (Brazil) 5
