The Gemstone Blog – Tagged "inclusions" – GemSelect AU
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The Gemstone Blog — inclusions

How to assess a mounted diamond

Posted by MICHAEL Hart on

How to assess a mounted diamond

Retail jewellers rarely deal in loose stones so it is important for people who work in retail (as well as informed customers) to be able to estimate the proportions of diamonds that are mounted in jewellery. This post reviews some of the key formulas professionals use to assess the proportions of mounted diamonds.  Evaluating Clarity This first thing to understand about mounted diamonds is that the mounting can hide inclusions. Mountings such as prongs can also interfere with lighting and cause reflections that can be misleading. To see what’s under a prong, find the prong’s reflection on the opposite side...

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Inclusions found in Diamonds

Posted by MICHAEL Hart on

Inclusions found in Diamonds

Clarity is one of the most important factors when determining a diamonds value. To come up with a clarity grade, diamond graders look for flaws or imperfections known as inclusions. This post reviews, the different types of inclusions that are found in diamonds. Diamonds have two types of inclusions - internal inclusions which occur inside the diamond, and external inclusions which occur on the surface Internal inclusions: Xtl - A crystal contained inside the diamond. Ndl - A needle is a long thin crystal that can appear light or dark Pp - A pinpoint is a small spot that can...

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