...These artificial crystals do not necessarily have to be replicas of natural gemstones, but as long as they are beautiful and hard, they can be used as synthetic gemstones. Examples include yttrium aluminum garnet (abbreviated as YAG), which has become widely used as a substitute for diamond, and cubic zirconia. The success of artificial diamonds, which can be said to be the highlight of gemstone synthesis technology in the 20th century, was achieved in the spring of 1955 by General Electric (GE) of the United States, using a method of synthesis under ultra-high pressure and high temperature conditions. * Some of the terminology that mentions "yttrium aluminum garnet" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…これらの人工結晶は必ずしも天然宝石の再現でなくても,美しくかつ硬度があれば合成宝石としての用途をもつことになる。ダイヤモンドの代用石として広く普及をみたイットリウム・アルミニウム・ガーネットYttrium Aluminium Garnet(略称YAG(ヤグ))やキュービック・ジルコニアなどはその例である。宝石合成技術の20世紀のハイライトともいうべき,人工ダイヤモンドの成功は,55年春,アメリカのゼネラル・エレクトリック(GE)社による超高圧・高温の条件下での合成法である。… ※「イットリウム・アルミニウム・ガーネット」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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