Crystal model
A crystal model is a teaching aid used for understanding concepts in crystallography and the morphology of crystals. Models are ideal to learn recognizing symmetry elements in crystals.
Bravais lattice models at Humboldt-Universität
Pear wood model (Quartz hyalin rhombifère) and front page of Traité de Minéralogie (Paris 1801) by R. J. Haüy
Cardboard and glass models by Dr. F. Krantz
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