GOLD PURITY CERTIFICATIONS
SAO Certified
Singapore Assay Office (SAO) is an independent test laboratory that test precious metals such as gold, silver, platinum and palladium purity since 1975. It is Singapore's only recognised and independent body that tests and certifies precious metal articles.
When you buy from Princess Gem, you are buying authentic gold and silver jewellery. All Princess Gem products are made out of sterling silver, gold or gold alloy and our products have been tested by the Singapore Assay Office (SAO) to ensure that the gold fineness meets Singapore’s strict standards.
SINGAPORE ASSAY OFFICE (SAO)
GOLD & SILVER TEST REPORT
THE STANDARD OF GOLD FINENESS
The standards of fineness are defined by:
Karat (K)
which represents 1/24 part of pure gold or
Numerical mark
Which represents the number of parts by weight of pure gold expressed in parts per thousand
| NUMERICAL VALUE REPRESENTATION |
KARAT VALUE REPRESENTATION |
| 750 | 18K (75% Pure Gold) |
| 583 | 14K (58.3% Pure Gold) |
| 375 | 9K (37.5% Pure Gold) |