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Test your knowledge of gemstones and rocks with quizzes.
Test your knowledge of gemstones and rocks with quizzes.
Photos and interesting facts of all your favourite gemstones and rocks.
Learn about different rocks and gemstones and see how your scores improve over time.
Some of the gems and rocks include agate, carnelian, emerald, jade, marble, tanzanite, and sapphire.
Wat is er nieuw in de nieuwste versie 1.3.0
Last updated on Dec 11, 2018
Update for Android Oreo
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Gem & Rock Quiz
1.3.0 by Silver Moon Apps
Dec 11, 2018