Clarity
Clarity is defined as the degree to which the stone is free of inclusions. Unlike a shape, size or weight, the factor of clarity is not as easy to determine. Clarity ranges from gemstones which appear perfect under a 10X magnifier (called flawless) to those which show a major number of flaws to the unaided eye. In between are gemstones that are called "eye clean" which we usually call "EC". The more expensive the gemstone type, the more clarity faults or flaws are acceptable. An emerald with flaws visible to the unaided eye is acceptable; a garnet with such flaws might not be.

Below is scale which defines Clarity grading of Gemstone at GemsBiz.com!

Color
As like same clarity, color factor is also slightly difficult to determine because it applies according to stone like all colorless gemstones such as silver topaz or diamonds, should be as colorless as possible and colored gemstone should have that color as rich as possible. In almost all cases of faceted, colored gemstones, the color should be as deep as possible without being opaque.

Below is scale, which defines Color grading of Gemstones at GemsBiz.com!

Cutting and Finishing
In faceted gemstones there are a number of different cuts like Diamond cut (round), Emerald cut (rectangle with cut off edges), Rose cut, Checker Broad, Princess cut, the most common cut and there are hundreds of other cuts which have been used. For faceted cuts the important factor is uniform, well polished facets that are made at the proper angles. For very valuable gemstones like diamonds, a perfect facet series is often passed over to maintain as high a weight as possible.

In Cabochon, the cut should be a uniform dome that is highest in the exact center. No cracks should show. All cabs should show a proper sheen or luster and have a high polish.

There is on standardized scale to explain the cutting and finishing of gemstone but we have tried to explain our standard of cutting and finishing of Gemstone and Beads through below mansion numeric scale:

Overall Quality Grading
Below is scale, which defines Overall Quality of Gemstone and Beads at GemsBiz.com!