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这是一个关于矿物和宝石测验，它可以帮助你熟悉它们。
This quiz will help you become familiar with a few minerals and gemstones. There is questions about birthstones, mohs scale, mineral colors, and their structure. The time limit per question is 10-15 seconds and it will tell you the correct answer once you get it wrong twice or run out of time最新版本2.0更新日志
Last updated on 2016年04月10日
New questions
Some updated graphics
And new description on the main menu!
翻译中...
Mineral and Gemstone quiz
2.0 by Our Exotics
2016年04月10日