Research Article Search Results
モンタナ州のYogo（ヨゴ）渓谷から産出されたサファイアの宝石学的な特徴 (英語)
A look at the mining and distinguishing characteristics of this naturally vibrant blue sapphire.
合成ダイヤモンドの特徴 (英語)
Presents a visual guide to the growth processes and major gemological spectroscopic features of synthetic diamonds.
Outlook on Opals from Mexico and Australia (英語)
Jürgen Schütz discussed the opal sourcing and cutting activities of the German firm Emil Weis.
Update from the Responsible Jewellery Council (英語)
The Responsible Jewellery Council (RJC) has announced plans to include colored stones and silver in the next revision cycle for its Code of Practices, which RJC members are certified against.
宝石の巨匠: Drehers家と素晴らしい彫刻 (英語)
A look at the artistic heritage of the Drehers, an influential family of gem carvers in Idar-Oberstein, Germany.
オーストラリア東部のアコヤ真珠養殖業 (英語)
Characterizes the akoya cultured pearls produced on the eastern shoreline of Australia using native Pinctada imbricate fucata mollusks.
Flashes and Flames in Ethiopian Opal (英語)
Chatoyancy, rarely seen in play-of-color opal, is observed in Ethiopian material.
天然ダイヤモンドにオーバーグロースした合成ダイヤモンド
Analysis of a diamond graded Fancy blue revealed a CVD synthetic overgrowth on natural diamond.
Trapiche-Type Sapphire from Tasmania (英語)
A rare Tasmanian trapiche-type sapphire, found during a field expedition, is examined.
A New Deposit of Gem-Quality Grandidierite in Madagascar (英語)
Reviews the properties of exceptionally pure grandidierite from a new source.
インドネシアのロンボク島産の有核養殖真珠と無核養殖真珠 (英語)
Documents the retrieval and testing of P. maxima cultured pearls from a Lombok hatchery.
.jpg "YMAL AJP")
