Sandblasting: A matte finish applied to gold and silver using a jet of sand compressed by steam.
Sapphire: variety of corundum that is most often seen in blue hues. Fancy sapphires occur in all colours.
Sandblasting is a general term used for the process of cleaning, smoothing or etching a hard surface by forcing very fine bits of solid material across that surface at high speeds.
The outer coating is blasted off with glass beads and then the surface is "polished" by sandblasting with a soft limestone powder.
A sand blasting unit is not expensive. The basic setup can be purchased for around $50.00.
Satin finish - A matte finish achieved by sandblasting, brushing with a stiff wire brush, or chemically altering a surface. Satin finish has a soft, pearl-like lustre
Scalloped - An ornamental edge that consists of a series of curves ...
A matte finish achieved by sandblasting, brushing with a stiff wire brush, or chemically altering a high shine surface. Satin finish has a soft, pearl-like luster instead of a bright polish.
scalloped ...
MATTE FINISH A dull finished surface created by sandblasting, stone finishing or brushing..
MATINEE A single strand of Pearls 22 to 23 inches long.
MELEE Diamonds up to .20 carats in size.
Ilmenite sand is also used as a sandblasting agent in the cleaning of diecasting dies.
[edit] Production
according to U.S. Geological Survey[4] ...
A matte finish achieved on a metal surface by sandblasting, polishing the piece with a stiff wire brush, or chemically treating the surface. Satin finishes are popular because they are less likely than a high gloss finish to show wear.
Satin finish: A dull finish imparted by sandblasting, brushing with a stiff wire brush, or by chemical means; a soft luster rather than a high polish.
Scallop Setting: See "Buttercup Setting."
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This includes such techniques as sandblasting, faceting, polishing, as well acid etching the finished piece to leave a matte sea glass like finish.
most delicate polishing and cleaning work, such as jewelry and fine crafts, the gold standard is tripoli, also called rottenstone. Tripoli is microscopic, microcrystalline quartz that is mined from beds of decomposed limestone.
Sandblasting ...
 See also: Blasting, Natural, Glass, Surface, Finish
  
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