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产于我国台湾省东部的一种颜色甚似优质绿松石的蓝玉髓,享有“台湾蓝宝石”之称。据研究,这种玉髓之所以具有美丽的蓝色,与其组成中有硅酸铜(可能是蓝色的羟硅铜矿Ca_5[SiO_3]_4(OH)_2或硅孔雀石(Cu、Al)_2H_2Si_2O_5(OH)_4、H_2O)的存在有关。除此之外,它还含有少量的绿松石和蛋白石。
Produced in the eastern part of Taiwan Province of China, a color similar to the quality of turquoise blue chalcedony, enjoy the “Taiwan Sapphire,” said. According to the study, the reason why this chalcedony has a beautiful blue, with the composition of copper silicate (possibly blue oxysilicate Ca_5 [SiO_3] _4 (OH) _2 or silicon malachite (Cu, Al) _2H_2Si_2O_5 (OH) _4, H_2O). In addition, it contains small amounts of turquoise and opal.