For over 33 years, Hari Krishna Exports Pvt. Ltd. has been a trusted manufacturer and wholesaler of certified natural diamonds in India.
HK sets high standards for transparency so buyers know exactly what they are purchasing. In line with international practice, a certified diamond is professionally assessed for the 4Cs — cut, colour, clarity, and carat weight — and documented in an independent report.
The 4Cs | At a glance |
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Cut | How well the diamond is proportioned and finished; affects brilliance and sparkle. |
Colour | Presence or absence of body colour on a standardised scale. |
Clarity | Visibility of internal and external characteristics under magnification. |
Carat weight | Diamond weight measured in carats; a unit equal to 0.2 grams. |
Certification builds confidence. It offers an objective view of quality and gives buyers the reassurance that the diamond has been tested by an authorised laboratory.
Summarises key details and internal quality checks carried out by HK.
Available from recognised laboratories, as applicable to the stone:
Laboratory | Full name |
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GIA | Gemological Institute of America |
IGI | International Gemological Institute |
HRD Antwerp | Hoge Raad voor Diamant (HRD Antwerp) |
NGTC | National Gemstone Testing Centre |
At HK, certification is not just paperwork — it is part of our commitment to clarity, credibility, and long-term relationships.
Now our exclusive diamond inventory of 45,000+ sparkling diamonds is available 24/7 online on the hk.co website/app to you with a 360-degree diamond video with a zooming facility.