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Needle-like crystals penetrating gem materials.
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A machine which forcefully blows out streams of grits of various hardnesses to abrade, texturize, etch, or carve gem materials.
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An old method of casting with wet casting sand being pressed firmly around the model making a mold for filling with molten metal.
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A disc or belted charged with abrasives which smooth the surfaces of stones, preparing them for polishing.
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The cloth belt or disc which is charged with abrasives for the sanding processes between the grinding and polishing steps.
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A smooth but not brilliant metal polish.
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The revolutions per minute and the surface feet per minute of a revolving saw blade.
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Oxidation of a metal surface caused by heat.
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A cabochon engraved with a variation of the ancient Egyptian sacred beetle design.
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A metallic-appearing shimmer or sheen seen in some gem materials.
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Cutting radial lines in soft metal faceting laps to prepare the lap for polishing large facets.
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Slatelike stones used with water for removing blemishes on a metal surface.
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A threaded metal bolt which feeds the material by turning to push the carriage of the slab saw forward.
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Sharp tools used to draw or trace designs on metal.
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Jewelry made with soldered scrolls of wire.
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Clay-like substance which air-hardens to a metallic mass similar to "liquid steel."
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A flannel jewelry polishing cloth, half charged with rouge.
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Indentical flattened "s" shaped links.
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An enamel technique with a design scribed through to expose previously fired layers.
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The steel rod upon which the revolving parts are mounted.
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Used to dop sensitive stones or to make abrasive tools.
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Hook-shaped earwires.
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Carborundum. A hard synthetic for grinding and sanding.
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Forming metal by pounding and stretching it into a hemispherical die.
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Mineral deposit in springs.
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A saw blade with diamond powder mixed with metal powder and made into a thin circle, which is then heat treated and soldered to the edge of a circular saw.
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A flat section or slice of rock.
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A saw which is designed to cut slabs or slices of rough material with a circulat diamond saw blade.
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A liquid for removing oil from slabs.
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The mixture of polishing powder and water used on a polishing buff.
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Quick, easy-set, commercial mountings.
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A stone less than 5 in hardness on the Mohs scale.
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A variety of alloys, mostly gold or silver, which when heated to the flowing point will permanently unite the chosen pieces of metal.
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Soldering is done on a fire-proof block such as charcoal, fire brick, or ceramic.
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Aggregates having characteristically smooth, often shiny, cleavage faces.
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The density of a mineral in comparison to that of water.
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A machine used to shape and polish spheres by the use of revolving cutters and various grits.
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A tapered, threaded tool to hold buffs.
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Forming metal by stretching it over a chuck using a lathe.
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The cover for a slab saw which prevents coolant mist from spraying into the room.
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A metal pan beneath the grinders and sanders to catch water.
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The metal hood above the grinding and sanding wheels designed to keep water from splashing into the room or onto the lapidary.
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A grooved, curved wooden machine for sanding cabochons.
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A ring-shaped jewelry clasp with a spring in the tube.
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That part of the wax model which reaches to the edge of the flask so that when it melts there will be a canal for the molten metal.
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Base for attaching the sprue to the model.
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Wax rod for making sprues which will burn out cleanly and quickly.
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Smooth steel forms for use in forming, raising, and planishing metals with hammers.
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Steel tools for stamping impressions into metal surfaces.
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Round 58 facet gem.
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Triangular facets next to the table.
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An inexpensive method of casting using steam pressure.
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Emerald cut. A basic facet design, usually rectangular or square, with rows of parallel facets.
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A standard of metal purity for silver with 75/1000 parts of copper to 925/1000 parts of fine silver.
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A movable pronged holder for inspecting faceted stones.
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Removing scale, old plating, or dull surface of metal by electrolysis.
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A block with various sizes of indentations to hold tubing for sawing and filing.
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Small needle files.
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Monday, September 2, 2013
Jewelry Glossary - S
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