1. Gems in the early modern world : materials, knowledge and global trade, 1450-1800 /: materials, knowledge and global trade, 1450-1800. (2018) Editors: Bycroft, Michael; Dupré, Sven, 1975- Record Type: Book Extent: 1 online resource, illustrations (black and white, and colour) View Content: Available online (eLD content is only available in our Reading Rooms) ↗