| 摘要 |
<p>A gemstone positioning fixture, including a base and a cover plate applied over the base. The cover plate has apertures, one for each gem to be worked on. At least one biasing member is positioned beneath the plate. The biasing member applies an upward force to the gems to contact the cover plate. The plate is formed of materials that conduct electricity, so as to conduct any charged particles away from the gem work surface.</p> |
