Natural Untreated Loose Gemstones

Brand > Ravenstein Gem Co.

  • Color Change Diaspore-turkey 2.87ct Clarity Si2-rare Natural Untreated Gemstone
  • Danburite-mexico 11.32ct Clarity Si2-large-perfect German Cut-natural Untreated
  • Untreated Blue Topaz-namibia 14.70ct Flawless-perfect Cut-for High-end Jewelry
  • Untreated Blue Topaz-russia 12.96ct Clarity Vs1-rare Origin-for High-end Jewelry
  • Untreated Green Dichroic Topaz-russia 80.90ct Flawless-huge-top Investment-video