This was listed on the M.S, Rau website. It is a silver bowl that was done in the kumbo technique. Difference was they used many layers of metal to make the wood grain look. I’m wondering if they used different forms of gold, or was there different thin sheets of differing metals used to obtain this look? Tiffany & Co. Mokume and Sterling Silver Bowl | M.S. Rau I wish Jeffery Herman was still with us to tell us all about it.
Mokume-gane can be done with any metals that are of different colors or that can be colored differently through patination. Alternating sheets of silver and copper is probably the most common combination in the West.
The Wikipedia article has good explanation.
This should be a lesson to all older + members. I have severe back issues. When I first wrote this post it was late at night. I had not only taken a muscle relaxer, but one of my very controlled pain killers. My mind read the mokume, as kum boo. I know better. I’ve make the mokume billets years ago, and still have some of the sheet it made. BUT, this did get my mind working. What about kum boo, with different than the gold sheet I was taught decades ago to use? Does it have to always be used on silver? Those were the only two metals we were taught. Granted successive applications of the gold did layer it into areas getting lighter as new was applied on top of it. Mountain-scapes looked amazing receding to the horizon doing the layering. How would silver sheet on top of bronze look like? Or copper on top of silver? Or even bronze on top of silver? What are the limitations of using those very thin sheets applied with heat and pressing them onto the heated metal? So sorry for being an addled old lady.