ruby, sapphire, corundum, Burma.12, jade, jadeite, fei cui, gems

Sinkankas: Both articles based on author’s many gem-buying trips and with photos taken by himself; describes geography, transport, the people, mining of gemstones, geology of deposits, mineralogy, history, recovery of jade and amber, mines, and gem trading. Obit. American Mineralogist, 59, 1974, p. 1870. Mining. [414].