To ensure the value of your investment and avoid being cheated, check these 3 signs for the purity of gold jewellery. <nis:link nis:type=tag nis:id=hallmark nis:value=hallmark nis:enabled=true nis:link/> <nis:link nis:type=tag nis:id=goldjewellery nis:value=goldjewellery nis:enabled=true nis:link/> <nis:link nis:type=tag nis:id=indianstandards nis:value=indianstandards nis:enabled=true nis:link/> <nis:link nis:type=tag nis:id=purity nis:value=purity nis:enabled=true nis:link/>