Hallmark guide · Gold-filled
What does RGP / Rolled Gold Plate mean?
Rolled gold plate (RGP) is gold alloy of at least 10 karat bonded mechanically to base metal, making up at least 1/40 of the item's metal weight, with the karat stated (e.g. '14K. R.G.P.' or '1/40 12 Kt. R.G.P.'). If the layer is 1/20 or more, it may be called gold filled.
- Metal
- Gold-filled
- Purity
- —
- Where
- US
01
Often confused with
- Thinner than gold filled (1/40 vs 1/20 minimum).
- Not solid gold.