There are instances when GSC tested a client’s jewellery, the purity was lower than what was indicated on hallmark it bears. For example, the hallmark on the jewellery indicates 916, this means the piece of jewellery is supposed to contain at least 91.6% of pure gold. But the authentication result might come out as 88 ~ 90% only. This often happens to jewellery that is bought long time ago or if it was bought overseas.
It might be due to the poor quality control compared to how it is done presently or it is not as stringent as how it is done in Singapore. To protect ourselves as a consumer, we suggest purchasing from reputable and responsible jewellers/goldsmiths at the same time keeping the receipt of purchase.
Purchasing from jewellers /goldsmiths that have already sent their jewellery to Singapore Assay Office for assaying and hallmarking would be a good choice as you are assured of quality. Singapore Assay Office (SAO) is an independent test laboratory that tests precious metals such as Gold, Silver, Platinum and Palladium purity since 1975. The jewellery tested will bear SAO mark which is a lion’s head. You may read here for more information.
Maya