158                      THE DIAMOND
	to be flawed. This condition arises from faults of proportion whereby the rough edge or skin of the stone around the girdle is reflected into the interior of the diamond. It is usually found in stones which are cut too shallow on the culet side. If a diamond is not suf­ficiently deep from the girdle to the culet, a reflection of all rough places on the girdle will appear in the body of the stone. These reflections are not distinctly visible to the naked eye though they destroy to some extent the brilliancy of the jewel. Under the loup they become so prominent that one unaccustomed to them would think they existed in the stone. They are indisputable evi­dence that the stone is not cut so as to give the proper brilliancy, and diamonds of this character should be used only where a large surface effect at a minimum cost is wanted. To find flaws, use a jeweler's double loup with an inch focus; if that is not at hand, blow the breath quickly on the stone while it is cold, and search for them while the resulting mist lasts.