vbl. sb. Also 9 (erron.) facetting. [f. FACET v. + -ING1.] The action or process of cutting facets on gems or metals.
1875. Ure, Dict. Arts, Facetting.
1877. Streeter, Precious Stones, I. iv. 32. The Brilliant depends greatly upon the facetting for its exceeding beauty.
1877. Gee, Goldworker, xi. 180. The workman turning the links of gold chains between his thumb and finger and while it seems as if they are being presented in a haphazard fashion to the lap, the most perfect-shaped diamonds are being produced. This is called faceting.