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IL86762D0
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Centering apparatus for a gemstone
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IL61467D0
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Apparatus for grinding workpieces,particularly the girdle of gemstones,to a desired configuration
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DE2904349A1
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Precious stone radiused edge forming equipment - has rotary grinder head with circular recess coated with grinder particles
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DE2904365A1
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Precious stone mounting while grinding - has top and bottom arms keeping holder bar perpendicular to disc
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DE2904348A1
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Precious stone end facet polishing equipment - has spring fingers with cushions on underside extending over polishing disc
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DE2904366A1
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Precious stone polishing machine - has tapering holder with positioning and indexing sleeves spring loaded together
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US4246727A
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Fixture for use in grinding and polishing table facets of gems
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US4221082A
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Device for holding precious stones during cutting and polishing the facets thereof
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US4237658A
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Device for use in polishing table facets of gems
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IL53125D0
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Device for holding precious stones during cutting and polishing the facets thereof
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IL51596D0
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Device for use in polishing table facets of gems
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IL51539D0
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Device particularly useful for cutting or grinding round girdles of gems
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IL51538D0
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Bracket fixture for use in grinding and polishing table facets of gems
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