A Treatise on Diamonds, and Precious Stones/Chapter 2/Section 8
SECT. VIII.
On the Peridot or Chrysolite.
The peridot, or common chrysolite, is of an olive green color, of more or less intensity. It comes from the Levant, and is commonly found imbedded in lava. Although deficient in hardness and brilliancy, it is, on account of its agreeable color, not unfrequently worked up into necklaces and other ornaments: but owing to its being less hard than crystal, or scarcely harder than glass, it is but little in request.
The tools the lapidary commonly uses, are not fit to polish the peridot; it should be transferred to the glass cutter, who will give it the finest lustre it is capable of receiving: or the lapidary should use glass-cutters' tools, and polish with putty.
When cut in steps, and formed in nice proportion, it will appear to the greatest advantage.