GIA is an independent, nonprofit organisation that conducts gem research, educates gem professionals and sets the standards for determining diamond quality.

One of GIA’s main functions is the grading of diamonds. You may have already heard or learned about the 4Cs of diamond quality: Cut, Colour, Clarity and carat weight. GIA created this standard, along with the scientific procedures for evaluating each “C” and the grading terminology used to describe them.

GIA does not mine diamonds, nor does it buy, sell or trade them commercially. It doesn’t appraise diamonds and is not otherwise involved in diamond pricing or valuation. GIA operates independently of these commercial interests, ensuring that its diamond quality assessments are completely objective and unbiased.

If you want to know the quality of the diamond you’re considering – and you should, because quality and price go hand in hand – then you should look for GIA graded diamonds and the GIA diamond grading reports that will accompany them.

Bow Diamonds use GIA graded diamonds from 0.15ct upwards, using the 3C's CUT, COLOUR and CLARITY and an extra very important stone identifier of TYPE which separates natural diamonds from lab grown diamonds.

The 4th C (CARAT) i.e. the size of the stone, is not identified in the Bow Diamonds logo grading due to it's reference to the size of a diamond, not its quality.