To make such an interesting signet you need to combine wood and epoxy. For this, a wooden blank is taken, broken from one edge, so that the bonding area is maximum. The tree is placed in a plastic mold and filled with epoxy resin, the color of the resin can be made to taste.
After the resin has dried, a signet can be made from the resulting combinations of wood with it. In fact, such a blank is suitable for any small-sized crafts.