Special Topics:

Antique Book Selection:

Some rare gemological works have been published before 1600. Usually within a religious, medicinal and superstiticious context. Famous physicist Boyle was one of the first to provide a systematic gemological study of gemstones, and to look at refractive characteristics (rainbow effect) in the Diamond.

With the onset of the Renaissance the physical sciences started to develop more independently. Before the 1600's,  medicine, gems, gemology, geology were treated in one discourse. By 1800 those had all developed into separate disciplines. Find a selection of publications in between 1600 and 1800 here.

Farlang has been recommended by PBS as an important resource!

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Complete List of Books

gemmological information and ruby lore, mining and history
Sapphire gemmological information, history, lore and mining