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यह यह है कि आप उन लोगों के साथ परिचित हो मदद करता है, खनिज और रत्न शामिल हैं के बारे में एक प्रश्नोत्तरी है।
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 timeअनुवाद लोड हो रहा है...
Mineral and Gemstone quiz
2.0 by Our Exotics
Apr 10, 2016