@book{68967,
	author = {Wade, Frank Bertram,},
	title = {A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public},
	publisher = {Project Gutenberg,},
	year = {2009},
	address = {Salt Lake City, UT :},
	note = {Release date is 2009-02-12},
	url = {https://www.gutenberg.org/ebooks/28058}
}