What are Trigons in Diamonds?
One of the most difficult areas for diamond buyers to understand is the “C” of clarity. That’s unfortunate, because it does not have to be that way…
Unlike the other three C’s, clarity is multifaceted because the elements measured to determine the clarity rating of the diamond are numerous, and exist both inside and on the surface of the diamond. Clarity characteristics, (also called “flaws”) are present in just about every diamond. In fact, a diamond that is rated “flawless” exists in only about one out of 5000 stones.
The diamond clarity rating scale measures both internal and external “flaws.” Internal aberrations are called inclusions and surface level aberrations are called blemishes. A trigon is an external pattern on the diamond rough.
Trigons are triangular-shaped and are a result of growth marks in the stone created during the age of development of the diamond. They are one of many patterns that can occur in a diamond. While their existence is obvious on an uncut stone, they do affect the internal graining of the stone.
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Internal graining takes the form of lines angles or curves and might be whitish colored, or reflective in nature. A twinning wisp is another inclusion and is a series of pinpoints clouds or crystals that form in a twinning diamonds growth plain. Twinning wisp’s appear flat or ribbon like and usually sprawl out from the diamond center. Next is a grain center, which is a small concentrated area of crystal growth they can be white or dark and have a threadlike or pinpoint appearance. These elements are caught deep inside the diamond and can occur either by themselves or with other twinning wisps. They’re subtle and can appear or disappear as the viewer rocks the diamond or moves it from side to side.
Many inclusions come from mineral crystal deposits contained in the diamond. There more than 24 different mineral crystals that might be found in any diamond. The most common is just smaller diamond crystals, but you may also see olivine or garnet crystals quite regularly.
The bottom line is that inclusions and blemishes are part of just about every diamond. And trigons are just one of the many forms that a exist in diamond.