Polished diamond constitute a major cost in jewellery it
is therefore very important to know about loose diamonds.
The value of diamond is determined by the 4 C'S
Diamonds are first sorted according to their shape i.e. Round
Brilliants, Single Cuts, Marquises, Princess Cut etc.
They are then sorted according to color i.e. Fine White, Commercial
White, Top Light Browns, Top Silver Capes / Light Color Or
in Gia Terms from D to Z
They are finally sorted according to clarity i.e. from cleanish
to I3 and the rejections
These are then sieved according to sizes i.e. weight. Normally
you have lots -.01, .01-.02, .025-.07, .08 -.17 PTS and larger
THE FIFTH C WHICH YOU WILL FIND IN US IS CONSISTENCY