What is the “Half Moon” amulet made of, and how does that affect its use? — Talisman "Crescent Moon"

According to the card, the “Half Moon” amulet is an accessory made of shungite (composition — shungite); it is suitable for everyday wear as a decorative accessory. The net weight is 0.006 kg (6 g). The card does not specify how to wear it or its dimensions: detailed recommendations and the description of the product are to be found on the packaging. The amulet should be kept in a dry place out of the reach of children. The card states directly that the product is not intended for the diagnosis, treatment or prevention of diseases.

General information (not a manufacturer's instruction): shungite is a natural stone, and the shade and texture may differ slightly from piece to piece; in case of skin hypersensitivity to the material, it is better to stop using it.