| Owl Gemstones Faceted and cabochon gemstones, descriptions, pricing factors and certified gemstones. http://www.owlservices.com/ |
| Pentagon Gem Cutters Provides repair, polish, cutting, rough and sales of colored gemstones. http://www.pentagongem.com/ |
| Precious Pebbles Faceted gemstone suppliers with an emphasis on Oregon sunstone. http://www.precious-pebbles.com/ |
| Rough and Ready Gems Cutters and suppliers of faceted gemstone briolettes in matched and single pieces. http://www.briolettes.com/ |
| Royal Gems Precious and semi-precious gemstones. http://www.royalgems.com/ |
| Sapphire-Untreated.com Yogo sapphires from the Yogo Gulch, Montana, U.S.A. http://www.sapphire-untreated.com/ |
| The Color Source Find information on colored gemstones, both faceted and cabochon and on diamonds. http://www.thecolorsource.com/ |
| The Dorado Company Faceted semi-precious and precious gems available. http://www.azgem.com/ |
| TMS Gems Fine facet rough to the hobbiest as well as to the trade. http://www.tmsgems.com/ |
| White's Fine Gems Custom-cut natural gemstones for jewelry or for the collector. Also offering custom gem cutting services. http://www.whitesgems.com/ |
| WSF Gemstones Custom cut colored gemstones and jewelry. http://www.wsfgems.com/ |