Title: GCAL Diamond Grading
Description: 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.
Keywords:diamonds, gcal, diamond grading, grading, diamond certificate, certificate, certification, guarantee, gemology, research, five start, 5star, SourceVeritas, jewelry, jewelry manufacturing, gemstone certification, jewels, gems, gemstones, diamond testing, how to buy a diamond, diamond grading services, color grader, colored stone identification, diadex,
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