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    Sapphire Rush Near Kataragama, Sri Lanka

    この地域の地質と調査中に観測されたサンプルの説明を含め、この新たに発見された鉱床でのサファイア採掘と取引状況を詳細に説明。

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    Sapphires Reportedly from the Batakundi/Basil Area

    予備検査および、中央アジアの他の鉱床産のルビーとピンクサファイアとの比較。

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    Tablet to Tablet Exhibit Summary

    カリフォルニア州カールスバッドのGIA本部にあるThe Richard T. Liddicoat Gemological Library and Information Center(Richard T. Liddicoa宝石学図書館情報センター)で2011年11月から2012年8月の期間に展示されました。

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    Industry Periodicals

    世界各地の代表的な業界誌のリスト

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    Design Competitions

    新人やプロのジュエリーデザイナーのための、世界で最も重要なコンテストをご紹介します

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    Pricing Guides for Gemstones

    宝石と宝飾品の価値について学ぶのに役立つダイヤモンドと宝石の価格設定ガイドのリスト。

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    Recommended Books on Jewelry Manufacturing

    宝飾品製作芸術を学ぶための優れた書籍です。

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    GIA Counters Counterfeit Inscriptions

    CARLSBAD, Calif. – Feb. 23, 2021 – Recently, GIA (Gemological Institute of America) encountered a number of stones that were submitted for updated reports or verification services that did not match the GIA report submitted with them. The newly-submitted stones were either laboratory-grown diamonds or treated natural diamonds, falsely inscribed with GIA report numbers.

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    GIA Board Meets to Set Priorities; Welcomes New Governors

    CARLSBAD, Calif. – Nov. 17, 2021 – The GIA Board of Governors held their first in-person meeting in two years, Nov. 5 – 8, in Carlsbad, California.

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    AGS and GIA Advance Their Common Missions

    Forging a significant new collaboration

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    The Rarest Books on Jade are Now at GIA

    CARLSBAD, Calif. – Aug. 24, 2021 – Jade motifs often represent the ancient relationship between gems and humanity; they tell important stories and traditions. These stories come to life in a rare, spectacular set of books, The Bishop Collection: Investigations and Studies in Jade, recently acquired by GIA (Gemological Institute of America).

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