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。
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。
应用推荐