Cristallographie planches [between 1780 and 1800?]
Cristallographie planches is a set of copperplate crystallography plates by Jean Baptiste Louis de Romé de L'Isle, published around 1780 in France for mineralogists and students of crystal form. The pictures show paper cut-out style crystal outlines with dotted hidden edges and single-letter face labels, which a designer could take as a clear model for technical line diagrams of geometric solids.
![Picture 1 of 6 from Cristallographie planches [between 1780 and 1800?] (1780), leaf 61](https://img.insideoutlibrary.com/img/200/ia-cristallographi00rome-61-0.webp)
![Picture 2 of 6 from Cristallographie planches [between 1780 and 1800?] (1780), leaf 67](https://img.insideoutlibrary.com/img/200/ia-cristallographi00rome-67-0.webp)
![Picture 3 of 6 from Cristallographie planches [between 1780 and 1800?] (1780), leaf 73](https://img.insideoutlibrary.com/img/200/ia-cristallographi00rome-73-0.webp)
![Picture 4 of 6 from Cristallographie planches [between 1780 and 1800?] (1780), leaf 79](https://img.insideoutlibrary.com/img/200/ia-cristallographi00rome-79-0.webp)
![Picture 5 of 6 from Cristallographie planches [between 1780 and 1800?] (1780), leaf 85](https://img.insideoutlibrary.com/img/200/ia-cristallographi00rome-85-0.webp)
![Picture 6 of 6 from Cristallographie planches [between 1780 and 1800?] (1780), leaf 91](https://img.insideoutlibrary.com/img/200/ia-cristallographi00rome-91-0.webp)