It looks like the neighborhood interest in the blue rocks (collected on various mine tailings in the Southwest) is waning, so I needed a new source to put in the little wagon in front of my Hobbit Hole. I decided to make some Kindness rocks, with various uplifting phrases engraved on them.
I got the rocks from my local Home Depot, in the form of a mesh mounted river rock tile:
The cool thing is these rocks have all been sliced nice and flat and less than 0.5” thick, so they are easy to use in the Glowforge. I did coat them with a thin layer of resin first (I used Little Windows Brilliant resin, which has no chlorine in it) to bring out the full color of the rock. It’s a pain to do the coating though, so for the next batch I might mask them and paint through the mask. Otherwise there’s not enough contrast after engraving, in some cases (depends on the individual rock).