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Diamonds 101

POLISHED GEM QUALITY DIAMONDS

Based on the descriptions above, a polished gem diamond requires the basic 4 C's:

  1. Carat weight
  2. Colour
  3. Clarity
  4. Cut

CARAT WEIGHT

The size of the polished gem does matter and is further complicated by reaching stipulated price bands, such as 0.25 ct, 0.50 ct, 1.00 ct, 3.00 ct, 5.00 ct, and 10.00 ct and so on. The price difference between a 0.99 carat and a 1.00 carat is very high and this continues throughout all the size bands.

COLOUR

After size, color is the first step to the pricing of a diamond, and as with the rough, the whiter colors are the most sought after.  Fancy colors are in a different set of price bands altogether and are affected by the saturation of the color as well as color overtones such as orangey-pink, etc.

CLARITY

The internal quality is very important and there are large price differentials between Internally Flawless and VVS, etc. Therefore, the higher the clarity, the more prized and expensive the polished gem becomes. 

CUT

to add 

OTHER IMPORTANT FACTORS FOR POLISHED GEMS

The quality of polish and symmetry is vital to achieve maximum brilliance, scintillation ('sparkle') and dispersion ('fire'). 

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