abraded facet edges See abraded facets.
abraded facets Can be caused by poor polishing by the cutter, storing diamonds improperly with other diamonds or general wear and tear in a mounting.
Abrade- to wear away; abrasion is caused by friction.
Adamantine - diamond-like luster.
Adularia - "flash" in moonstones created by microscopic inclusions.
Amorphous - describes a substance with no precise patterning of atoms.
In immersion. Abraded coating reveals the lighter, inherent color of the tanzanite. (Photomicrograph courtesy Christopher P. Smith, AGL) ...
Examples would be abraded facet junctions which give hardness clues, or characteristic surface features like the "engine-turned" effect that is diagnostic for elephantine ivories. ...
cabochons, beads and these kinds of cuts wear well since they have no sharp edges to abrade
A soft damp cloth is ideal for cleaning the gem and because the gem is naturally porous ...
I'm frequently asked to repolish scratched or abraded stones in the mounting. Depending on the jewelry and the work required, I can sometimes oblige. Here's a nice emerald cabochon I repolished for Rainey in the diamond and white gold ring setting.
A soft and porous gem, coral scratches and abrades easily and chlorine, alcohol, ammonia, nail polish remover, and other chemicals can damage it. Remove coral rings when washing and moisturizing your hands.
Hardness: The ability of a gemstone, mineral, glass or other hard object to resist being abraded, or scratched. Hardness is measured by comparison with that of other selected minerals according to the Moh's Scale.
Locked away in piles, gems & metals can chip or abrade each other & get entangled. Each piece must be stored separately in velvet, silk, paper or in sections of a fragment pouch or box.
Zircon jewelry should be stored carefully because although zircon is relatively hard, it can abrade and facets can chip. Dealers often wrap zircons in individual twists of paper so that they will not knock against each other in a parcel.
Zircon jewelry should be stored carefully because although this ancient gem is hard, facets can abrade and chip. Clean with mild dish soap: use a toothbrush to scrub behind the stone where dust can collect.
Wearing rings on fingers that touch each other allows the rings to abrade one another and scratch metal away from the shanks. Over time you will not only have a scratched up ring, but one with less metal in the band than it started out with.
STREAK. Colour of the surface of a stone after being rubbed or scratched. "Streak-Powder" is the powder abraded from a stone.
Inclusions (inside the diamond) may take the form of crystals, cracks, clouds, growth lines, and cavities. Surface blemishes may include scratches, nicks, pits, abraded facet edges, extra facets and naturals. See additional information on Clarity.
The filler material used is fragile and may fall out, break or abrade. It is important to buy fine ruby from a reputable retailer who will provide, in writing, all pertinent information regarding the gem including enhancements and special care notes.
This results in a gem with the typical domed top of a cabochon and a faceted pavilion, giving the illusion of depth as the eye is drawn into the center of the gem. The cut shows good brilliance and has a crown that is less easily abraded than those ...
worn a ruby spinel in a ring on the right hand and has done many things that have subjected it to hard knocks, yet it is still intact, except for a spot that accidentally came in contact with a fast-flying carborundum wheel, which of course abraded ...
The article points out that chalk dust with a hardness (H) of 3 has been found to abrade periclase (H: 5.5).
 See also: Stone, Color, Gemstone, Jewel, Diamond
  
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