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Assaying & Hallmarking – STS

    https://www.singaporetestservices.com/assaying-hallmarking/
    Since 1975, Singapore Test Service’s SAO is the one and only established and independent accredited assaying and hallmarking office in Singapore, providing professional testing services for precious metals such as gold and silver in the jewellery industry. Under the SAO Hallmarking Scheme, manufacturers, traders, and retailers are encouraged to submit their gold jewellery for purity testing and certification.

NGI - Nan Yang Gemological Institute

    http://www.ngi.com.sg/
    We are an independent gem testing and jewellery appraisal laboratory in Singapore. A member of the Singapore Jewellers Association, we specialize in diamond grading, gemstone identification, and jadeite/jade identification.

Top Singapore Jewellery Appraisers & Gemologists

    https://www.ja-world.com/sg/sg-jewellery-appraisers.html
    The Far East Gem Lab, established in 1988 by the award-winning Gemologist Thye Sun Tay, provides a range of services including gem identification (gem testing), diamond grading and jewellery appraisal (jewelry appraisal).

Laboratory Services - GemLab Singapore

    https://gemlab.com.sg/laboratory-services/
    The jade identification (Jade test) report professionally documents the results of a full examination of a material. The results detailed will identify the material examined giving such identifying characteristics as colour, clarity/transparency, shape, cut, dimensions, weight and a coloured photo. The report will also state whether it is natural without any treatment (A-Jade) or if the material has been treated to …

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