BNT Diamonds offers only classified & tested diamonds, which are certified by the world’s most renowned grading institutes. Each polished diamond (above 0.30 Ct) carries its own identity via a unique certificate.
This is a laminate-protected document that summarises a diamond's vital information based on the 4 C’s — the diamond’s cut, colour, clarity and carat — and precisely describes the characteristics that can help determine its value.
Keep in mind that while it’s essential documentation regarding the quality and characteristics of the value, the certificate itself does not give any indication of a diamond's monetary value. Diamond valuation is a separate process.
BNT only uses the best, and that extends to our certification.We only work with the most renowned certificates of the diamond industry, which come from:
GIA: Gemological Institute of America: Established in 1931, the GIA has been at the forefront of establishing standards and encouraging research in gems and jewellery. The GIA is a nonprofit institute that exists for the public benefit and to promote education.
HRD: High Diamond Council – Hoge Raad voor Diamant: HRD is Europe’s foremost authority on diamond grading and education. The Council is based in Antwerp, which has been a hub of the diamond trade for almost six hundred years.
IGI: International Gemological Institute: The International Gemological Institute is the largest organisation of its kind, with 20 laboratory locations around the world for grading and synthetic diamond production. IGI also operates 14 schools of gemology, graduating thousands of new jewellery professionals each year.
Furthermore all diamonds purchased from BNT Diamonds for investment purposes, (starting from 1 Ct) can have laser inscriptions added. Upon request, our team can have the certification number of the diamond inscribed in the stone itself.