Bright purple stones with little matrixing or blotches are the most valued . gem grade sugilite is beautifully translucent and brings a high price . the rich shades of purple have made it a highly sought after gemstone but it is one of the rarest gemstones 舒俱来石由很多种矿物元素组成，包括有钾钠铁锂等但它的基本元素组合，乃是氧化矽，化学式： si12o30氧化矿物。
