id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
28058	Wade, Frank Bertram	A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public			.txt	text/plain	50704	2862	73	A TEXT-BOOK OF PRECIOUS STONES FOR JEWELERS AND THE GEM-LOVING PUBLIC While every gem stone refracts light which enters it from the air, _each stones (diamond, garnet, and spinel) bend light as was illustrated in 2. Sapphire, of hardness 9, scratching any gem material except diamond. any valuable cut stone._ Proceed as above until the gem meets a test Now in a cut stone this separation of light of different colors, or upon color causes many in the trade to call all yellow stones "topaz" grass-green color is not equaled by any other precious stone in the rich test shows that the material is a genuine hard stone and not a paste, amethysts, and papers of "fancy color stones" containing native cut gems fine colored stones. Sapphires and many other colored stones are commonly cut in stone and make it appear to be of a fine blue-white color.	./cache/28058.txt	./txt/28058.txt