3D Geometric Puzzles are 6 kinds of fun challenges !
3D Geometric Puzzles, for children aged 8+ and adults.
Can you assemble these 3D geometric shapes based on actual crystal structures !?
Try the Amethyst, Calcite, Chrysophase, Quartz, Tanzanite and/or Zincite !
3D Geometric Puzzles !
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.. Try Amethyst ?! .. 
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Customer
Reviews:
"These are fun challenging 3D puzzles that I really like."
"Great, and my 11 year old daughter loves them too ! "
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