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GH Moore & Son
19 Vyse Street, Hockley
Birmingham B18 6LE
Tel: 0121 523 6488
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Regardless of size or shape, a well-cut diamond will reflect light within itself, from one mirror like facet to another. The light then disperses through the top of the stone, bringing out its fiery scintillation. If a diamond is cut to deep or shallow, light will be lost through the side or bottom. This reduces its brilliance and, ultimately, its value.  
  The cut of a diamond can also affect its visual size. Two diamonds with the same carat weight can appear to be different sizes depending on the shallowness or shape of its cut.  
  What to look for?  
  • When choosing a diamond, hold it up to the light. See how the light dances around - It should throw out a rainbow of colours and display the diamonds natural brilliance.
  • Ask your Jeweller to show you all the cuts and shapes.
  • Be sure to try a good selection to find the perfect one for you

Carat is often mistakenly used to refer to a diamonds size but its actually a measure of weight. One carat can be divided in to 100 points. A 0.50 carat diamond may also be described as a 50 point or a half carat diamond.

Larger diamonds are found less frequently in nature, so they can command a significantly higher price for instance, a one carat diamond will cost more than two half carat diamonds of equal colour, clarity and cut.

Your diamond is not valued my carat weight alone. Two diamonds of equal carat weight can have very different values, depending on cut, clarity and colour. A small but perfectly cut diamond of whiter colour and flawless clarity can be more valuable than a larger stone that is less white and with more inclusions.

  What to look for?  
  • A diamond can appear larger or smaller than its actual weight, depending on its cut.
  • Look at different designs and mounts as they can affect the appearance of the size of the diamond.

Diamonds are found in almost every colour of the rainbow colour but white colour diamonds are the most popular.

There are more than 20 grades of colour, identified in alphabetical order from D to Z variations are so slight that colours must be graded by an expert under controlled lighting and compared against a master set of stones.

  D-E Exceptional White
F-G Rare white
  H White
  I-J Slightly tinted white
  K-L Tinted White
  M-Z Tinted colour
  As with the other four Cs the value of a diamond will vary depending on colour. Two diamonds with the same clarity and weight will vary depending on colour.  
  What to look for?  
  • When buying a diamond, consider the setting and the metal colour as it can be used to accentuate or de-emphasise the colour

Every diamond is unique. Naturally occurring features known as inclusions make each stone unique usually invisible to the naked eye, these tiny marks are minerals or fractures which appeared while the diamonds were forming in the earth.

The amount, type, colour, size and position of these inclusions can affect the value of a diamond. However, many can only be seen by experts using a ten-power magnification loupe. Even with the loupe, the tiniest inclusions can be very difficult to find.

Flawless diamonds are more rare and thus, more expensive but small inclusions do not affect the beauty or the brilliance of a diamond. Diamonds equal in weight and colour will vary greatly in price depending on the inclusions, however, the difficulty in there being seen by the naked eye should be taken in to consideration when purchasing.

  Diamonds are graded for clarity in the following way:  
  F Flawless: No internal or external flaws. Extremely rare.
  IF Internally flawless: No internal flaws, but some surface flaws.
  VVS1 - VVS2 Very very slightly included (2 grades) Minute inclusions very difficult to detect under 10x magnification
  VS1 - VS2 Very slightly included (2 grades) Minute inclusions seen only with difficulty under 10x magnification.
  SI1 - SI2 Slightly included (2 grades) minute inclusions more easily detected under 10x magnification.
  I1-I2-I3 (three grades) inclusions easily visible under 10x magnification and also visible to the naked eye.


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