Karelian Heritage Elite Shungite Handmade Ring, Natural Black Shiny Crystal Healing Jewelry SR05 Karelian shungite polished beads bracelet for EMF protection The ring is made of lead and nickel-free alloy and genuine elite shungite nuggets The ring size is adjustable, the US size range from 6 to 10. Shungite rings are well-known for stimulating the huge number of bioactive spots located in our hands and fingers that are strongly related to nervous, cardiovascular, respiratory, and digestive systems. Manufactured by Karelian Heritage Company and comes in original packaging with a business card