It is more precious than emeralds , and dearer than fine opals .
它比绿宝石更宝贵,比猫眼石更值价。
Care must be taken when polishing and setting opals .
必须注意设置时,抛光和蛋白石的硬度。
Opals can be found in many other places .
蛋白石中可以找到许多其他地方。
Opals are softer compared to other gemstones too .
蛋白石是软也比其他宝石。
As teenagers , the twins spent many summer afternoons fossicking for opals in the old mine .
十几岁时,这对双胞胎在很多个夏日的午后在旧煤矿上寻找猫眼石。
Opals could be brilliant because they have tiny crystals which could scatter light .
蛋白石闪光是因为有小的水晶颗粒可以反射光。
Roman historian pliny described the beauty of opals as the combination of the beauty of all gems .
罗马历史学家普林尼形容为美丽蛋白石结合所有的美丽瑰宝.
The discovery could help to explain how certain hummingbirds , ducks , pheasants , insects and even objects , such as opals , achieve their brilliant colors .