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Split top bails for pendants.
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Shaping metal with a hammer and a base.
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A polish compound used for jade and hard-to-polish stones.
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Small jeweler's saw with no V joint, used for sawing tubing.
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Leather mallet embedded with shellac for delicate metal work.
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A series of uniform micron-sized alumina polishes for stones of various hardnesses.
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Small pump to bring water to a grinding wheel.
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A properly adjusted flame for soldering has a blue tip and yellowish or greenish interior cone.
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Light which reaches the eye when the beam strikes the surface of a gem. (Total reflection includes light from within.)
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The bending of light rays that enter transparent material.
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A measure of the angle at which a light ray is deflected in a specific gem species.
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Carving attached to and raised from the background.
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Instead of a lost wax model, a natural object such as a flower is burned out for the casting mold.
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A process of giving a sculptured effect to jewelry by hammering embossing tools onto the metal placed in a pitch bowl.
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Texturing metal into a deeply ridged surface by the use of a torch.
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Speed control device for flexible shaft machines.
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This metal, which is resistant to oxidation and acid, is often used to plate silver.
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Used to find the size or half-size for a ring.
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Round, tapered steel stick for forming rings.
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A tapered stick for measuring the size of a finished ring.
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A tool which stretches the metal of a ring by thinning or rolling the metal.
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So-called "cold connectors" for some jewelry items are rods slid through holes and flattened over the ends to hold parts together.
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A mill with steel rollers to alter the gauge of flat metal or wire, such as reducing thickness of metal or flattening wire.
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A polished metal disc used between beads in necklaces.
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An early facet style with a flat bottom and round, domed faceted top made up of triangle cuts coming to a point on top.
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A machine which finishes gem materials when charged with appropriate grits and rolled over and over by an electric motor.
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A rod tipped with carbon steel wheels for smoothing grinding wheels which are not true.
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Various iron oxide powders used for polishes.
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Minerals or mineral aggregates which occur without a regular crystal surface, or gem material that has not been worked on.
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The first grinding of the preform.
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A mold made of a speical rubber which is used to make multiple identical castings.
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Elongated needles of this mineral are common inclusions in many gems and are often responsible for sagenite and asterism.
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Monday, September 2, 2013
Jewelry Glossary - R
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