Hatton Diamond Group are a proud supplier of GIA diamonds. Across our stores in Hatton Garden we hold a large inventory of GIA certified diamonds, so you can be sure that what you’re paying for is an accurate, trusted grading of a diamond. If you’re interested in purchasing GIA certified diamonds, just visit one of our stores or get in touch using the contact form.
Established in 1931, the GIA (Gemological Institute of America) is the world’s foremost authority on diamonds, coloured stones and pearls. A public benefit, non-profit institute, GIA is the leading source of knowledge, standards and education in gems and jewellery. It is well known amongst jewellers as the de facto place to get loose diamonds accurately graded. There are many laboratories that offer grading services, but most will have varying grades between them and are susceptible to bad business practices. Sometimes these ‘graded’ diamonds are inflated to get higher prices. With GIA, they set a standard within the industry and are well-known for highly accurate and trusted grading, using the top of the range technology in their labs.
The GIA laboratory also issues diamond grading reports for loose, natural diamonds in the D-to-Z color range that weigh 0.15 carats or more. These reports include an assessment of a diamond’s 4Cs – colour, clarity, cut, and carat weight – along with a plotted diagram of its clarity characteristics and a graphic representation of the diamond’s proportions. For standard round brilliant cut diamonds falling in the D-to-Z colour range, the report also includes a GIA Cut grade. Diamond grading reports are not issued for diamond synthetics, diamond simulants, mounted diamonds or those that have undergone unstable treatments, such as fracture filling or coating. And while reports may be issued for diamonds that have been laser drilled or HPHT processed, reports will indicate that the diamond has been treated.
For more information on GIA certified diamonds, feel free to enquire at one of stores or get in touch through the contact form.
13 Hatton Garden, London EC1N 8AN
Tel: + 44 (0)20 7404 9202
107 Hatton Garden, London EC1N 8LY
Tel: + 44 (0)20 7813 1619
100A Hatton Garden, EC1N 8NX
Tel: + 44 (0)20 7242 8748