Read the stamp
22K hallmark
For a 22K hallmark, 22K GF, 22K RGP and 22K HGE describe the gold layer over another metal. 916 is the corresponding common fineness stamp.
22K and 916
The karat figure counts gold parts out of 24. 916 is the corresponding common fineness stamp. K, KT and CT are karat abbreviations. Rings often carry the stamp inside the band; chains may carry it on an end tab or clasp.
What to check next
22K GF, 22K RGP and 22K HGE describe the gold layer over another metal. Retain the suffix when reading a small stamp. Compare a worn K with the letters in any maker signature beside it; the maker initials and the purity mark answer separate questions.
