According to the card, the amulet can be worn as a pendant every day. The diameter is 40 mm. The card does not state what is included (cord, chain), the hanging length or care rules. Among the warnings: keep out of the reach of children.
General information (not a manufacturer's instruction): a cord or chain is usually chosen separately by length and material; jewellery made of natural stone is best protected from knocks, long contact with water and chemicals.