Crystal model

Bravais lattice models at Humboldt-Universität
Porcelain model and engraving by Romé de l'Isle (1780s)
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

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.

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