CHAP. 34.—PRASIUS; THREE VARIETIES OF IT.
There are numerous other kinds also of green stones. To
the more common class belongs prasius; [Note] one variety of which
is disfigured with spots [Note] like blood, while another kind is
marked with three streaks of white. To all these stones
chrysoprasus [Note] is preferred, which is also similar to the colouring
matter of the leek, but varies in tint between topazos and gold.
This stone is found of so large a size as to admit of drinking-
boats [Note]
even being made of it, and is cut into cylinders very
frequently.
