DescriptionR. J. Haüy, pearwood crystal model, collection Teylers Museum, Haarlem (the Netherlands).jpg
English: Rhomboid Rock Crystal (Quartz hyalin rhombifère). One of the 597 pearwood crystal models made by Abbot R.J. Haüy of Paris, which Martinus van Marum purchased for Teylers Museum, Haarlem (the Netherlands) between 1802 and 1804.
Attribution: Teylers Museum, Haarlem, the Netherlands
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