high hand!
引用5楼 cls_103 跟玉一样，6.5的硬度，要说脆，祖母绿不是一样
欧泊硬度5-6呀，黑欧泊也到不了6呀
好看
2颗一起可以镶嵌个双石戒指！
还没迈过欧泊
引用25楼 cls_103 1.3 and 1.05
the wholesale pirce in Australia for those black opal would be around 2500 RMB max
