A Tradition Of Science and Education. Established in 1931, GIA is the world's foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source …
Diamond History and Lore. Diamonds have a long history as beautiful objects of desire. In the first century AD, the Roman naturalist Pliny stated: "Diamond is the most valuable, not only of precious stones, but of …
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GIA,GIA。GIA、、。,。 #GIA# 202336,GIA ·T· (Richard T. Liddicoat) (Tucson Gem and Mineral Show)·· ...