ClarityIn gemstones, clarity refers to the amount of internal flaws (inclusions) or external flaws of each stone. Most gemstones have some amount of inclusions, and finding a flawless gemstone is rarer than finding a flawless diamond. When gemstones are formed, the process within the earth that creates them is what determines the number of flaws a cut stone will have. | |
CutA gemstone can be cut the same way that any diamond can, although each stone has particular features that lend themselves to particular cuts. Brilliant cuts are made to maximize the amount of light return from a gemstone by being cut with many facets. | |
GradingThe grading system used on gemstones is just like that of diamonds, but also considers the following: transparent, with transmits light without serious diffusion; translucent, which allows light to pass through, but only diffusely (semi-transparent); and opaque, which does not allow light to pass through. | |
Polish
Darker-colored and opaque gemstones can be polished instead of faceted. This is called the cabochon cut, which consists of a smooth, rounded surface with no facets for the light to dance off of. It does, however, create the "cat's eye" and "star" effects, which are equally beautifully in their own way.
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