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Gem Certification and Assurance Lab (GCAL) is a diamond research and identification laboratory that offers a zero tolerance guarantee on all of its grading certificates.

We are a supplier of semi-precious gemstone rough as well as semi-precious & precious gemstones cut to customer specifications. We cut our stones from our rough, we source stones through our contacts in producusing countries like Brazil, Tanzania...

Learn About Diamonds, Precious Gemstones, Jewelry, Colored Gem Grading & Basic Gemology

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Watch Parts Watch Tools and Jewelry Findings plus Jewelers Tools jewelry Supplies. Wholesale watch bands wholesale jewelry findings wholesale jewelry supplies; watch tool kits, jewelers tools, loose gemstones

Info Antwerp diamonds suppliers, best diamond reliable wholesale deals. Buy certified diamonds, engagement rings at trade wholesale price in Antwerp World Diamond Center Exchange Antwerpsche Diamantkring Factory

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Save on certified diamonds, is your jewelry source for buying certified diamonds at wholesale prices, GIA certified diamonds and AGS certified diamonds.

Offering GIA diamonds, each with an exclusive Quality Guarantee, Lifetime diamond trade-in privileges, 30-day return, and written appraisal. We sell only GIA certified diamonds, in a classic solitaire setting or as a loose diamond.

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On line Gemology Course, learn how to grade and identify gemstones, diamonds and colored stones. Get hands on experience using real gems.