Amazingly crafted rings created locally in the Wairarapa by Off Track Arts with New Zealand Greenstone (Pounamu) and mokume metal.
hibuichi (四分一) is an historically Japanese copper alloy, a member of the irogane class, which is patinated into a range of subtle greys and muted shades of blue, green, and brown, through the use of niiro processes, involving the rokushō compound.
Shibuichi means "one-fourth" in Japanese, and indicates the standard formulation of one part silver to three parts copper, though this may be varied considerably according to the desired effect. Several major variants of the alloy have specific names, as detailed below. in addition the metal in general, and especially the paler shades, may be named rogin.