9 Terms
Contributors in Gemstones
Gemstones
heat treatment
Fashion; General jewelry
he application of high heat to a gemstone in order to improve its color and clarity.
hue
Fashion; General jewelry
efers to the position of a color on the color wheel, or the dominant wavelength of color attributed to a gemstone. There are six primary hues: violet, blue, green, yellow, orange, and red. In between ...
inclusions
Fashion; General jewelry
oreign matter that is "included" within a stone. This may be a foreign body such as a crystal, a gas bubble or a pocket of liquid. There are many varieties of inclusions and they are important visual ...
indicolite
Fashion; General jewelry
From bright blue hues to bluish green colors, indicolite tourmaline is another rare tourmaline color, and high quality specimens are regarded as quite collectable.
iridescence
Fashion; General jewelry
ffect caused by the interference of light on thin films within the gemstone.
irradiation
Fashion; General jewelry
xposing gemstones to radioactive rays from x-rays or other material to change or enhance the original color. Blue topaz is always irradiated, for example.
karat
Fashion; General jewelry
arat (as distinguished from Carat) is a measure of the purity of gold. Most gold jewelry is actually made from a gold alloy containing gold and another metal or metals. 18K gold, for example, is 75% ...
