117 



TAB. CCCLXI1I. 



AUG ILL A Topazius. 

 Topaz, 



Class 2. Earths. Order 1. Homogeneous. 



Gen. 1. Argilla. Spec. 11. Topaz. 



Syn. Occidental Topaz. Kirw. 1 . 254. 

 Topaz. Emmerl. 1. 73. 

 Topaze. Haily, 2. 504<. 

 Borax, gemma nobilis Topazius. Linn. 



1 opazes have been found in the island of Ceylon, the 

 Brazils, Bohemia, Saxony, Cornwall, &c. In Lesser Asia 

 a rose-red variety was discovered by our good friend Mr. 

 Hawkins before mentioned in this work | and since that 

 they have been found in New Holland, and in Scotland. 

 The specimen figured is from Cairn- Gorum, and was lent 

 me by its kind possessor Thomas Allan, esq. It is the 

 more curious, as part of it is of a fine light blue colour*, 

 and part cinnamon-coloured, with a beautiful soft glowing 

 warmth ; and the disposition of the two colours seems al- 

 most to explain the nature of the crystallization. I thought 

 therefore it would be instructive to give a figure of the base 

 of the crystal, showing nearly the form the colours are dis- 



* Topazes are of different colours, from deep wine yellow through reddish 

 yellows to greenish and rarely blueish ; — also colourless and transparent, 



