Qty-1 Pair of Shungite Baoding Massage Relaxation Balls - 50mm 100% natural shungite sourced from Russia.  These shungite spheres are hand-carved and polished to give each piece a reflective, elegant finish.  Size: approximately 50mm. each (1.96 inches) Weight (Pair): approximately 312 grams ( 11 ounces) Proper Use: Hold 2 balls in one hand and rotate them in circles in the palm of your hand. Rely on your fingers' flexion and extension to cause the two balls to circle each other. Shungite is a rare, ancient stone named for the only place in the world where it can be found- Shun'ga, Karelia, in the northern region of Russia. It is a black non-crystalline mineraloid consisting of more than 98% of carbon.