Two and three-phase inclusions have also been noted. Usually planes of two or more non-miscible liquids, each containing a gas bubble. In pegmatites and high temperature quartz veins also in cavities in granite and rhyolite in contact zones in alluvial deposits as pebbles. John's Island in the Red Sea where the gem was said to be mined. See "Identifying Characteristics" below.įrom the Sanskrit tapas for fire, alluding to the orange color, or from Topazios, an ancient Greek name for St.
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