Colored gems are higher value stones. People start to know the stones, and some beautiful stones become treasures. With the development of science, geologists gradually carried out scientific classification of various stones, giving them their own names. The gem industry in our country only developed in the 1980s, after which the concept of gems gradually […]
タグアーカイブ: Main features of natural colored gemstones
3) 透明性と純度: 透明性とは、色のついた宝石が光を送信できる程度を指します, 純度とは、宝石内の不純物の量を指します. 色付きの宝石は明確で透明ではありません, 透明性が高いと、全体的な品質が向上します. The transparency and purity of colorless gemstones are important factors for the beauty […]