Understanding 18K purity
18K / 750 contains 75% gold and is commonly used in modern or stone-set jewellery where a harder alloy can be useful. Purity should be kept separate from making charges, product premiums and taxes.
How to compare a quoted 18K rate
Match the same purity, unit and update time. A per-gram benchmark can be multiplied by weight for a metal-value reference, but the final jewellery or bullion price can include additional product-specific costs.
IBJA and BIS context
IBJA publishes benchmark rates for multiple fineness categories and says its published rates are without 3% GST and making charges. BIS hallmarking provides the official purity/fineness framework for hallmarked jewellery and uses a unique HUID identifier.
Related tools
FAQ
What purity is 18K gold?
18K is shown on this site as the 750 fineness category, approximately 75.0% gold.
Is the 18K rate the final jewellery price?
No. The page shows a metal-price reference. IBJA states its benchmark rates exclude 3% GST and making charges.
Where can I check hallmark information?
BIS explains the hallmark components and provides HUID verification through the BIS Care app.