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| The clarity of a diamond is determined by the number, the size, the brightness and the location of the internal and external characteristics, important structural phenomena and its transparency. Each stone is examined by several graders, utilising a loup and a microscope. Only when sufficient graders provide identical options will the grades be finally determined. |
| The fewer imperfections in a diamond, the better. A flawless diamond is extremely rare and valuable. |
| The clarity or purity of a diamond is determined by the number, the size, the brightness and the location of the external characteristics, important structural phenomena and its transparency. Each stone is examined by several graders, utilising a loupe and a microscope. Only when sufficient graders provide identical opinions will the grade be finally determined. |
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| Diamonds graded to the left are normally more valuable than diamonds graded to the right. |
| ( Subject to Colour, Clarity, Carat & Cut ) |
| Loup-clean (LC) or Internally Flawless (IF) |
| A Diamond is called "loupe-clean" if, after examination by an experienced grader with a loup 10X (corrected for spherical and chromatic aberation), it has been found free of internal characteristics. |
| VVS1-VVS2 |
| Very very small internal characteristic(s), which can be found from very hardly to hardly with a loup 10X.The size, position, number and brightness of the internal characteristics determine the distinction between VVS1 and VVS2 |
| VS1-VS2 |
| Very small internal characteristic(s), which can be found from fairly hardly to easily with a loupe 10X.The size, position, number and brightness of the internal characteristics determine the distinction between VS1 and VS2 |
| SI1 -SI3 |
| Small internal characteristic(s), very easy to find with a loup. The size position, number and brightness of the internal characteristics determine the distinction between SI1,SI2 and SI3 |
| P1-P3 or I1-I3 |
| Pique 1 or included 1. Internal characteristic(s) which can hardly be found with the naked eye through the crownside of the diamond. |
| Pique 2 or included 1. Large and/or frequent internal. |
| Pique 3 or included 3. Larger and/or more frequent internal |
| Reject |
| Diamonds not normally used for resale. |
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Viewing of goods: By
appointment only, as goods are not kept on the premises. Contact us - The Randburg Coin Team: We look forward to hearing from you. Randburg Coin was established in 1980 and later bought Bickels Coins which was established in 1964 and incorporated it into the existing operations. We have been buying and selling for more than 30 years. |
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