✅ SOLVED Black Wedding Band. What's it made of?

[sibbley]

Found on an old farm property that is slowly being turned into a walking trail park. It was about 3 inches deep, with dirt filling the inside. Seems like it may have been buried a while and not a recent loss. The ring seems to be too heavy to be just a piece of crap. It weighs 10.77 grams. There are no markings whatsoever. The pics don't do it justice, it's very shiny. Reminds me of chrome with a black tint. The ring is scratched inside the band and outside, although not too bad. Can't see what's under the finish. Doesn't stick to a magnet. I've seen these black rings can be made from many different materials. Most though, seem to be marked inside the band.

Anyone ever found a ring like this?

Thanks for looking...

 

[Red-Coat]

They’re made from a variety of materials, including anodised stainless steel, zirconium, Tungsten carbide, titanium, ceramic, carbon fibre, and high density Silicone. These materials can be naturally black or induced to be so using high temperature treatment, but also may be coated by PVD (Physical Vapor Deposition) or ion plating to add a long-lasting scratch-resistant deeper black finish. It's not unusual for them to be unmarked.

None of those will be magnetic.

They first became popular around 2016 but, since ancient Greek and Roman times, black wedding rings were carved from onyx or jet (a coalised fossil wood).