750 (18ct) Curved Carat Hallmark Stamp

750 (18ct) Curved Carat Jewellery Hallmark Stamp Punch

This quality 750 German-made carat stamp is .75mm high. This is the hallmark you need to use for 18ct gold (an alloy of 75% gold and 25% other metals).

This carat stamp is curved so you can hallmark the inside of rings, as well as any other piece of jewellery that requires a hallmark. 

The engraving is slightly arched to follow the shape of the ring and the curved shape makes it possible to punch directly into rings.

This punch is also part of   the Ultimate Lost Wax Jewellery Tool Kit   and   the Premium Jewellery Tool Starter Kit .