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ダイヤモンドの起源レポートについて学ぶ. 詳しく見る. GIAは、研究、教育、ラボサービスを通して宝石とジュエリーを購入する一般を保護する目的で1931年に設立された独立非営利組織です。.
gia 成立于 1931 年，是一家独立的非盈利机构，通过研究、教育和鉴定所服务来保护购买宝石和珠宝的大众。 宝石百科全书 生日石
About Diamond. Diamond forms under high temperature and pressure conditions that exist only about 100 miles beneath the earth’s surface. Diamond’s carbon atoms are bonded in essentially the same way in all directions. Another mineral, graphite, also contains only carbon, but its formation process and crystal structure are very different.
gia 是世界上最值得信賴的鑽石分級和寶石鑑定品牌。 GIA 以客觀專業著稱，確保所出的每一份證書均全面且準確。 GIA 為天然鑽石、天然彩色鑽石、實驗室培育的鑽石、有色寶石、珍珠和未知材料的鑑定提供證書和服務。
Citrine is the transparent, pale yellow to brownish orange variety of quartz. View the Gem Encyclopedia. Established in 1931, GIA is an independent nonprofit that protects the gem and jewelry buying public through research, education and laboratory services.
Ngân hàng Nhà nước sẽ thanh tra việc kinh doanh vàng của tổ chức tín dụng, doanh nghiệp trong 4 năm gần đây. Xem giá vàng ngày hôm nay 24h mới nhất: giá vàng SJC, giá vàng 9999, giá vàng PNJ, DOJI, 24k, 18k... cập nhật từng giờ.
My Laboratory & GIA Laboratory Client Portal. Now featuring one log in for My Laboratory and the GIA Client Portal. Maintain your laboratory account information and grading results online. You can manage your team members and provide access to My Laboratory, update payment preferences, view open balances and create shipping memos.
