About Mineral and Gemstone quiz
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
Download and install
Mineral and Gemstone quiz version 2.0 on your
Android device!
Downloaded 100+ times, content rating: Everyone
Android package:
com.ourexotics.mineralandgemstones, download Mineral and Gemstone quiz.apk
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