This lesson is mostly focusing on single engagement rings. They are not going to break the piece apart in order to give you an exact weight. This would ruin many beautiful pieces. There are GIA estimation formulas created for these rare purposes. These formulas should be stated on the appraisal form if used.
Diamond prices are always per carat.
There is an exponential increase in diamond prices as you move into larger carat sizes. This is due to the fact that diamonds become much more rare as they increase in size. C olor - diamonds occur in every color of the rainbow. Diamond color grades are actually based on a colorless grading system. Most diamonds sold in the retail trade range from very nearly colorless to slightly yellow or brown- the normal range.