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金绿宝石的名称也许不为人们所熟知,但说起变石和猫眼,那就大名鼎鼎、如雷贯耳了。无论是变石还是猫眼石,均是金绿宝石的变种。 金绿宝石是一个矿物名称,化学成分为BeAl2O4,常含有微量的Fe、Ti、Cr等组分,属斜方晶系,折射率为1.745~1.755,密度为3.76g/cm3,硬度很高,为8.5。金绿宝石主要存在于气成热液型、伟晶岩型矿床中。目前,这种宝石的著名产地是斯里兰卡,其次是俄罗斯的乌拉尔和巴西的米纳吉拉斯等地区。
The name of the golden emerald may not be well known, but when it comes to changing rocks and cat’s eye, it’s famous, overreaching. Whether it is a change of stone or cat’s eye stone, is a variant of gold emerald. Emerald is a mineral name, the chemical composition of BeAl2O4, often containing trace amounts of Fe, Ti, Cr and other components, is a orthorhombic system, a refractive index of 1.745 ~ 1.755, a density of 3.76g / cm3, high hardness, Is 8.5. Gold Emerald mainly exists in gas into hydrothermal, pegmatite type deposit. At present, Sri Lanka is famous for its gemstones, followed by Russia’s Urals and Brazil’s Minaglas.