Light green to greenish blue included weak to low color change. Description industry standards agta codes. Gem clarity is an important factor used to evaluate the quality and value of a gemstone. The basic hues are red orange yellow green blue violet and purple. A gem s tone refers to a gem s relative lightness or darkness.
However clarity covers factors that are part of the physical makeup of the gem itself. Black white and brown refer to tones and saturation not hues. Black and white are tones from darkest to lightest. Hue and color saturation. A perfect stone with perfect clarity or clearness is rare.
Green to greenish blue slightly included moderate to medium color change. Gem varieties for grading type 1. Gemstone clarity grading has become increasingly important for the sales of gemstones and gemstone jewelry via the internet where customers cannot see the gemstones in person. It is recommended that when purchasing a type 1 colored gemstone the buyer should expect the gem to be almost loupe clean. Type 1 gemstones are usually found almost completely inclusion free within the market.
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Of course other factors can impact a gem s appearance and structure most notably the cut. There are other factors taken into consideration when grading colored gemstones such as the quality and rarity of the material enhancements overall size of the stone uniformity of shape quality of cutting faceting and the combination of graded features. A gem s saturation refers to the intensity of its hue. Deeper green to bluish green clean bright to high color change. For colored gemstones it is difficult to use a one size fits all classification system for clarity since some colored gemstones are expected to have inclusions and are sometimes even identified by their inclusions.For colored gemstones it is difficult to use a one size fits all classification system for clarity since some colored gemstones are expected to have inclusions and are sometimes even identified by their inclusions. Of course other factors can impact a gem s appearance and structure most notably the cut. Green to greenish blue slightly included moderate to medium color change. However clarity covers factors that are part of the physical makeup of the gem itself. Light green to greenish blue included weak to low color change.
