... chlorastrolite绿星石 burma ruby缅甸红宝石 arkansas diamond阿肯色钻石 ...
基于262个网页-相关网页
Burma a ruby 缅甸红宝石
·2,447,543篇论文数据，部分数据来源于NoteExpress
In Burma, people could only find 1ct ruby from 500 tons of ores and the one with a high quality is really very rare.
缅甸每开采500吨矿石，才能出产1克拉的红宝石成品，而品质优秀者更是廖廖无几。
youdao
应用推荐
模块上移
模块下移
不移动