Is this pendant meant to be used as a medicine or treatment?

No. This pendant is explicitly described as an accessory, not a medical device or a treatment. It is chosen mainly as a symbolic piece because of the mineral look, the traditional meaning of shungite, and the Flower of Life motif.

Shungite has a long history of folk use, and many people are drawn to mineral jewellery worn close to the body. Those traditions and preferences are valid cultural reasons, but they are not evidence that the stone affects the body. The pendant should not be used in place of a balanced diet, prescribed treatment, or advice from a doctor.

If you have a medical condition, are pregnant or breastfeeding, or take medication, consult a qualified specialist before using such items as part of your routine. This pendant is not intended to diagnose, treat, or prevent any disease.

That said, for most people wearing a small stone pendant as a keepsake or meditation aid is a harmless personal choice, provided it is treated as jewellery and not as medicine.