Gold and Silver Assay and Hallmarking

 

Assay

Bombay Test House Pvt Ltd., has been recognized by BIS (Bureau of Indian Standards) the apex standard body under the Ministry of Consumer Affairs, Government of India, for Assaying and Hallmarking and is equipped with the State of the Art Gold and Silver Assaying Laboratory using XRF for preliminary and classic fire assay technique for Gold and Silver Testing.

Hall Marking

Gold and Gold Jewellery and Silver and Silver artifacts satisfying BIS guidelines for manufacture of Gold and Silver articles as per IS 1417:2009 and IS 2113: 2004 are segregated into lot based on information provided by the customers. Few of the selected pieces are scrapped/melted from the appropriate locations based on design /manufacturing criteria. The scrapped gold is accurately weighed on precision balance (0.001mg accuracy )and then undergo fire assay as per Indian standard IS 1418:1999 for Gold and IS 2113: 2004 for Silver. Once the fineness of the sample is found as per requirement, the representative jewellery lot undergo Hallmarking. The Hallmarking of Gold and Silver articles are carried out by CNC Laser marking machine-a non-impact method and does not cause sinking or bruising damages.