Foil Backed
The adding of a layer of metallic foil to the back of a gemstone to improve its color or brilliancy.
Fracture
A break or chip in a gemstone in any direction other than along a cleavage plane.
Paste is generally colorless, but may be foil backed to simulate other gemstones. Old paste jewelry is highly collectible, mainly if manufactured in Czechoslovakia.
Dead stone - this is a term often used for foil backed rhinestones which have lost their original shiny finish. This usually happens when moisture comes in contact with the foil backing and damaging it.
Paste could also be foil backed to imitate colored gems such as topaz and amethyst. Another colorless gem, rock crystal quartz, was also a popular diamond simulant.
They can be open backed or foil backed. They are normally shinier, and glitzier than rhinestones and they are frequently brilliant cut. They look more like real gem stones.
pachchikam
A style of jewellery in which polki or uncut diamonds are foil backed and set in silver
padak
See bulla ...
A jewellery setting where the stone is held in place by metal claws. It can also be used to refer to a manmade foil backed cone shaped crystal or stone where the top circular edge is bevelled.
CHEVRONS ...
The name comes from the Rhine river, which was the source of quartz crystals that were originally used in making rhinestones. Today rhinestones are made from cut lead glass and are usually foil backed to improve the reflective quality.
foiled - Glass or crystal beads and cabochons are sometimes coated on the back with a thin layer of tin foil to enhance their light reflectivity. These beads are said to be "foiled" or foil backed.
 See also: Jewel, Metal, Color, Stone, Crystal
  
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