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Dit is een quiz over mineralen en edelstenen, het helpt u vertrouwd met hen.
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 timeWat is er nieuw in de nieuwste versie 2.0
Last updated on Apr 10, 2016
New questions
Some updated graphics
And new description on the main menu!
Vertaling Laden...
Mineral and Gemstone quiz
2.0 by Our Exotics
Apr 10, 2016