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Ridge running from End to End on the under Side, 
which is hereby, as it were, divided into two Faces 5 
both which are alfo, tho" not fo diftinftly, parted 
from the upper Face, by another Ridge running 
quite round the Oval. 
The Stone moft commonly found engraved is the 
Beryl, that moft frequently found mext is th zjflafm 
or prime Emerald ; and then the Hyacinth ox J acini h f 
The Chryfolite is (ometim.es, but rarely, found en- 
graved ; as are alfo, but that very feldom, the Cryjlal, 
or Oriental'Pebble , the Garnet , and the Amethyft. 
Of the Beryl there are three Species 5 the Red, 
inclining to Orange-colour, tranfparent and lively 5 
the Yellow, of an Ochre colour 5 and the White, 
commonly called the Chalcedon , of the Colour of 
fheer Milk. Thefe two laft have lefs Life than the 
firft. 
The Plafm or prime Emerald ’is. green, nearly of 
the Colour of ftagnated Water* fometimes tolerably 
clear, but, for the moft part, full of black and white 
Specks, and rather opaque,, 
The Jacinth is of a deep tawny Red, like very old 
Port Wine, but lively and tranfparent. 
The Chryfolite is of a light-green Grafs-colour, and 
is fuppofed to have been the Beryl of the Ancients, 
tranfparent, but not lively. 
The Cryjlal or Oriental Pebble is harder and 
more lively than the common Rock Cryjlal 5 is of 
a (ilverifh Hue, and but very little inferior to the 
white Sapphire . 
The Garnet is of the fame Colour as the Jacinth , 
but more inclining to the Purple, and not fo lively. 
The 
