| 摘要 |
A hand-held burnishing tool for setting gemstones in a mounting wherein the burnishing surface comprises a rotating wheel having a hardened peripheral surface, the wheel mounted on a bearing and rotatable about the longitudinal axis of the handle. Urging the hardened peripheral surface against a soft metal gemstone mounting while revolving the tool about the perimeter of the mounting, causes the wheel to roll about the mounting and results in turning the edge against the stone avoiding scrape marks and scratches which can occur when a conventional blade burnisher is used. Crimps which may occur during the burnishing process may be easily worked out by repeated passes of the tool. By provision of various surfaces of revolution incorporated in the hardened peripheral surface, the edge of the mounting may be turned in a manner not readily obtainable with a conventional blade burnisher, including cold working a design in the edge while burnishing.
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