Budaoweng has two kinds, one is hydrogrossular, the other is chalcedony-opal.
不倒翁有两种，一种为水钙铝榴石玉，另一种为玉髓蛋白石玉。
Blue chaleedony is one of the most precious gemstones in Taiwan, The most popular imitations of blue chalcedony in Taiwan market are dyed chalcedony, dyed quartzite and blue opal.
蓝玉髓是台湾最珍贵的宝石之一，它产于台湾东部海岸山脉一带。
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