34 Terms
Contributors in General jewelry
General jewelry
Concave cut
Fashion; General jewelry
Traditional gem facets are flat or two-dimensional. Concave cutting creates facets that are curved or three-dimensional. These curved facets refract more of the ambient light and return it to the eye ...
Copper-bearing
Fashion; General jewelry
Gemstones that contain traces of copper are very rare and typically have a intense blue, blue-green or violet color. There was considerable excitement in the gem world when the first copper-bearing ...
Corundum
Fashion; General jewelry
A crystalline form of aluminium oxide known in the gemstone world as ruby and sapphire. It is naturally clear, but can have different colours when impurities are present. Corundum is much admired for ...
Greasy (luster)
Fashion; General jewelry
Ne of the the technical terms used to refer to the lustre of a gemstone. Jadeite is an example of a gem with a greasy luster.
Heat treatment
Fashion; General jewelry
He application of high heat to a gemstone in order to improve its colour and clarity.
Hue
Fashion; General jewelry
Efers to the position of a colour on the colour wheel, or the dominant wavelength of colour attributed to a gemstone. There are six primary hues: violet, blue, green, yellow, orange, and red. In ...
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 ...
