It took a few iterations, but I was able to develop a process for producing a few dozen of these pins. It’s a walnut burl veneer on a black acrylic sheet with a sanded super-glue metal-dust inlay (which I learned from Wyrmwood).

The process was as follows:

1. Laser cut several 1x1” squares from the acrylic
2. Hand-cut and superglue a square of walnut veneer to each square
3. Masking-tape the walnut face and return to the laser cutter (with a squaring jig)
4. Cut the silhouette and etch the inlay pattern. Leave tape mask in place.
5. Dust powder of choice (I had micron-sized powders for copper, aluminum, and brass for copper/silver/gold looking inlays)
6. Drip low-viscosity superglue onto powder
7. Sand glue flush (carefully) with rotary tool and sandpaper
8. Sand lightly until smooth
9. Varnish and glue on pin backing