Regardless of the above purposes, the beads on the bracelet need to be rubbed frequently. It is disrespectful to rub the statues of Buddha, Buddha's head or other venerable persons frequently. So as far as religious significance is concerned, try to choose something without carving.
Furthermore, as far as materials are concerned, completeness and originality are precious to good materials. Carving into round beads is already a kind of destruction to natural things, let alone carving. For aniseed, it can be said that it is difficult to distinguish the preciousness of the material from the small material such as bracelets. If you carve again, it is likely to be a means to cover up the defects of natural materials. It is recommended not to buy engraved bracelets.