Abstract
Morphological, optical and X-ray properties of several stones in glass were described and considerations were made of the geneses of these stones.
It has been found that the difference in the variety of the stones arises from the difference in compositions of molten glass itself and/or of refracory bricks. In addition, foreign materials which have been captured in the molten glass also affect the character of stones.
The writer found new occurrences of aegirine, celsian, hercynite and spinel in stones.⁄⁄⁄