The laboratory of HKGRACE is equipped with the most advanced gemological instruments and our professional team utilizes state-of-the-art technology in every step of gemstone identification. All methodologies employed by HKGRACE are set according to internationally recognized standards. In August 2018, HKGRACE has been accepted as a HOKLAS Accredited Laboratory (HOKLAS Registration Number HOKLAS 278). These ensure your confidence in the accuracy and consistency of HKGRACE reports.

HKGRACE remains independent and complies to the highest standards of quality assurance at all times, as we believe these are the keys to deliver impartial and objective results. Stringent supervision and audits are implemented on both the technical procedures and management system to meet accreditation requirements.


Registration No. HOKLAS 278
Hong Kong Gemological Research and Authentication Centre Company Limited (HKGRACE) has been accredited by Hong Kong Accreditation Service (HKAS) under the Hong Kong Laboratory Accreditation Scheme (HOKLAS), Registration No. HOKLAS 278, for Physical and Mechanical Testing as listed in HOKLAS Directory of Accredited Laboratory available from its website (


The Hong Kong Gemological Research and Authentication Centre Company Limited (HKGRACE) is dedicated to safeguard the interests of the stakeholders in the jewellery industry.  Every effort is made to uphold the HKGRACE values: professional, scientific, impartial and accurate.  Our expertise and competence in gemstone authentication guarantee the best quality of service.