40-B Horne Road
Singapore 209065

Tel : (65)6392 1592
Fax : (65)6342 2722
Email : sig_gemlab@yahoo.com

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At SIGMA, your jewellery/gemstone appraisal is performed strictly according to the international standards by our team of experienced gemologists and diamond graders.

We are fully equipped with all gemological equipments to provide an accurate and professional certification.

At SIGMA we work by appointment and in most cases, appraisal is completed immediately or by the next working day, depending on the quantity.

Each piece of jewellery is weighed, measured and described in details including the metal contents using our state of art gemological and gold testing equipments.

Your appraisal is professionally prepared to the highest standards.