• Ruby

  Corundum · Myanmar

  Very Rare
  Mohs 9$15,000 / ct
• Blue Sapphire

  Corundum · Kashmir

  Very Rare
  Mohs 9$11,000 / ct
• Emerald

  Beryl · Colombia

  Very Rare
  Mohs 8$9,500 / ct
• Diamond

  Native Carbon · Botswana

  Rare
  Mohs 10$12,000 / ct
• Tanzanite

  Zoisite · Tanzania

  Very Rare
  Mohs 6.5$1,200 / ct
• Black Opal

  Opal · Lightning Ridge, Australia

  Rare
  Mohs 6$3,500 / ct
• Aquamarine

  Beryl · Brazil

  Uncommon
  Mohs 8$400 / ct
• Amethyst

  Quartz · Uruguay

  Common
  Mohs 7$40 / ct
• Citrine

  Quartz · Brazil

  Common
  Mohs 7$30 / ct
• Peridot

  Olivine · Pakistan

  Uncommon
  Mohs 6.5$250 / ct
• Imperial Topaz

  Topaz · Ouro Preto, Brazil

  Rare
  Mohs 8$1,800 / ct
• Paraíba Tourmaline

  Tourmaline · Paraíba, Brazil

  Very Rare
  Mohs 7.5$25,000 / ct