None was allowed to use or wear Gold but those of the Imperial Race, which were the onely Nobles of the State; nor durst any one wear Jewels but the Emperor, the Empress and their Eldest Son; notwithstanding that they had an infinite quantity both of Gold and precious Stones in that World; for they had larger extents of Gold, then our Arabian Sands; their precious Stones were Rocks, and their Diamonds of several Colours; they used no Coyn, but all their Traffick was by exchange of several Commodities.Full text.
Cavendish, Margaret. The Blazing World.
Margaret Cavendish. The Description of a New World, called The Blazing-World (1668).