These are a standard set (28) of 6 x 6 dominoes, larger than usual, about 2-1/4″ long by 1-1/8″ wide, and 1/4″ thick. They were a custom order from a neighbor who is giving them as a graduation gift. I cut them on the table saw from a single plank of mesquite, so they all match.
Mesquite is notorious for pin holes and cracks, and I filled the worst of these with a mixture of mesquite sawdust and clear epoxy, which matches the wood color nicely and sands smooth to become barely noticeable.
The pips are drilled, and the lines cut on the bandsaw, by hand. Then they are filled with marine epoxy, which hardens to a pleasant off-white color, before final sanding and breaking of edges and corners. They are finished with olive oil and beeswax.
I would sell a similar set for $85.