The Identification of Stones in Glass

JSGT 1950V34 T025-T039

The techniques used in the Department of Glass Technology for stone identification are preliminary examination of the stone with a hand lens, microscopic examination of the stone when immersed in a liquid of refractive index similar to that of the surrounding glass, microscopic examination of thin sections of the stone, and examination of the x-ray-diffraction pattern provided by the stone. The features which provide information at any stage to the identity and origin of the stone are indicated, and the relative applicability's of visual and x-ray tests discussed.

H. E. Taylor & D. K. Hill