It would be pertinent to mention here that GIA neither mines for diamonds nor trade nor sell them commercially. They do not appraise diamonds and may not be otherwise be involved in diamond valuation or pricing. GIA would operate independently of various kinds of commercial interests. It would be done to ensure quality assessments of diamonds have been unbiased and based on objective.
In case, you wish to know about the quality of gia diamond Singapore you intend to purchase, as quality and price walk hand in hand, you should be searching for GIA graded diamonds along with the GIA diamond grading reports that would be accompanying them.