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CUTTING AND POLISHING.
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SECT. XI.
On cutting and polishing precious Stones.
The cutting and polishing of precious stones forms the business of the lapidary, an art materially differing from that of the diamond cutter.
The lapidary's apparatus[1] consists of a bench and several mills, adapted to the various operations he has to perform. They receive their motion from a wheel, which is turned with the left hand, by means of a crank. The mill used for cutting or rub-
- ↑ Portable lapidary's machines are so contrived, that they may be set on a parlour table
