Faceted

Ace Jewelry - Specialist site for untreated Yogo sapphires from Yogo Gulch, Montana, U.S.A.
American Custom Cut Gemstones - Individual faceter of precious and semi-precious gemstones, usually in fancy cuts.
Archaeological Discovery Ventures Inc. - Emeralds and gold recovered from a shipwreck.
Art-Sa - Limited selection of demantoid garnets, spessartite, other gemstones. Custom cutting said to be available.
Aussie Sapphire - Miner and faceter of Australian Reddestone sapphire. Certificate of origin and treatment guarantee available. Faceting equipment, supplies, and DVD's.
Best Cut Gems - Custom faceted gemstones including ammolite, tourmaline, benitoite, aquamarine, and tanzanite. Also jewelry available.
The Brazilian Connection - Faceted loose colored gemstones primarily from Brazil and Africa. Some jewelry.
Ceylon Sapphire - Ceylon-based faceter of natural, untreated sapphires each supplied with certificate.
Desert Moissanite - Informative site for purchase of lab-created, faceted moissanite gemstones.
Diamond CZ - Loose Cubic Zirconia gems, white and colored, in all classic facet cuts.
Elco Gem Company - An importer of calibrated loose faceted emeralds, rubies, sapphires and alexandrites.
Faceted Gem Stones - Supplier of faceted fancy-cut colored gemstones sourced in Russia and Eastern Europe.
Gem Depot - Semi-precious and precious gemstones.
Gemfix - Faceted colored gemstones, from the cutters in San Diego.
GemSpace - Gemspace.com supplies loose faceted colored gemstones and finished silver jewelry.
GoodRuby.com - Canadian supplier of unenhanced natural Burma rubies, Ceylon sapphires and other certificated gemstones.
Gran Gem - Supplier of faceted colored gemstones.
Hans-Dieter Haag e.K. - Professional faceting services in Germany. Easy to find English version flag/button.
Japan Gem Market - Loose faceted precious gemstone dealer in Japan. Prices in Yen.
Lapigems Gem Company - Tanzanite, Tsavorite, Malaia garnet and East African loose gem stones.
Majestic Gems - Loose faceted natural gemstones and gemstone information.
Marc Sarosi Company - Loose tanzanite, sapphire, garnets, and alexandrite. Information on mining and processing. Some gemstone jewelry.
Paraiba International Ltd. - Wide range of loose faceted colored gemstones. Some jewelry.
Pentagon Gem Cutters - Provides repair, polishing, and cutting of colored gemstones.
Precious Pebbles - Cabochons, AZ-mined turquoise rough, geodes, specimen minerals. Some silver jewelry and stone accessories.
Precision Gem - Custom cutter supplying unique designs of loose faceted gemstones.
Rough and Ready Gems - Briolette specialist site. History, setting tips, fabrication techniques and online store by cutter of natural faceted gemstone briolettes.
Star Cut Gemstones - Custom Gemstone Faceter showing uniquely cut loose stones. Re-faceting and repair service for gemstones.
Tanzanite Gemstone - Calibrated and investment grade loose stones. History and background information about Tanzanite. Some jewelry.
Unheated Natural Sapphire Gems - Natural Ceylon blue and yellow sapphires selected by a GIA-trained gemologist.
White's Fine Gems - Offering custom-cut natural gemstones for jewelry or for the collector. Also offering custom gem cutting services.