The combination of Genuine Shungite, Copper & Black Tourmaline acts as an EMF (electromagnetic field) shield. All three of these are known to offer EMF protection. https://emfprotector.org/emf-protection-crystals-how-do-they-work/ Also very grounding and positive energy.
Genuine Shungite, Copper & Black Tourmaline Bracelet
Protection ~ Grounding ~ Positive Energy
Important: Measure Carefully. Hand Size needs to be large enough to fit over the widest part of your hand (across knuckles). Measure with a string wrapped around your hand. The cord bracelets can be adjusted to size once on the wrist.
Stone colors may vary.