Precious Metal Bullion Purity Conversions

The following table provides conversion information for precious metal bullion purity measures.

Most modern Gold bullion purity is measured in parts of one thousand (Millesimal fineness), older bullion and most Jewellry purity is measured in Carats (or karats) a unit of 1/24 purity for gold.


Millesimal fineness

24k 999+
23k 958.3
22k 916
20k 833
18k 750
15k 625
14k 585
10k 417
9k 375
8k 333

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