...The original blue color is called hawk's eye, and in Japan it is called blue tiger's eye. The yellowish brown stone turns into red tiger's eye when heat treated. There are also stones that are bleached by acid treatment (called nukitora), and dyed stones that are further dyed in various colors (called sometora). *Some of the terminology that refers to "Red Tiger's Eye" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…本来の青色のものは鷹目石(ホークスアイ),日本では青虎目石の名で呼ばれる。黄褐色の石は熱処理すると赤虎目石となる。また酸処理による脱色石(ヌキ虎という)や,さらにそれを各色に染色した染色石(ソメ虎という)もつくられている。… ※「赤虎目石」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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