mokume gane & blackwood cufflinks

Here is a pair of Mokume Gane & African Blackwood cufflinks.
Mokume Gane is a Japanese technique involving the lamination of 2 or more contrasting metals,in this case 8 layers of copper & sterling silver,then cutting into those layers to reveal a pattern then flattening into a sheet to create a smooth,uniform material.
As far as I'm aware Mokume was first used to decorate the hilt & scabbard of Samurai swords but now is mainly used in the manufacture of jewellery,most notably by James Binnion & Steve Midgett.If you Google either of them you will be amazed by the work of 2 modern masters of an ancient craft.