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certificate · diamond · gem · gemmologist · gemologist · gems · gemstone provenance · gemstones · jewelery · jewellery · lab report · laboratory · valuer ·
What is a gemstone 'certificate' or laboratory report?
crystals · diamond · gem · gemmologist · gemologist · gems · gemstones · jewelery · jewellery · laboratory · minerals · mining · scientist · valuer ·
What is a Gemmologist?