Gemstones

Gemstones

Industry: Jewelry

Add a new term

Contributors in Gemstones

Become a Contributors

Gemstones

Zoning

Fashion; General jewelry

(color zoning) A term that describes the uneven distribution of colour in a gemstone. Zoning is best seen when looking at the stone through the top table facet.

Step cut

Fashion; General jewelry

A gem cut with rectangular facets along the perimeter.

Synthetic (gemstone)

Fashion; General jewelry

A synthetic gemstone is man-made rather than mined from the earth. Natural gemstones which are treated by industry-accepted methods such as heat or irradiation are not classified as synthetic.

Table

Fashion; General jewelry

The flat top part of a gemstone. The table is the largest facet.

Tone

Fashion; General jewelry

One of 3 characteristics used to describe the appearance of color. Tone refers to the lightness or value of the lightness in a particular stone. See also Saturation and Hue.