Gemstone Authenticity & Certification
GIE(Gemological Institute of Excellence),
GIA (Gemological Institute of
America),
IGI (International Gemological Institute),
GRS (Gem Research
Swiss Lab),
AIGS (Asian Institute of Gemological Sciences)
GII
(Gemological Institute of India),
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Gemstone Treatments and Enhancements (Rawatan Gemstone dan Tambahan) Copyright © Barbra Voltaire, FGG, G.G. 1999 >Terjemahan Rawata...
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Batu Yakut (Zircon). Nama zircon berasal dari bahasa Persia "zargun" yang artinya warna keemasan. Batu yakut atau zirc...
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