Mined in: Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania Description: A very protective stone that shields from negative energy. Helps with fevers and reduces swelling and inflammation. A good stone for the workplace because it helps alleviate feelings of fatigue and burn out. Strengthens the circulatory and respiratory systems and increases oxygen supply to the blood. Chakra: Third eye Chemical Composition: FeS2 SmallApproximate size for 1 piece: 3.5cm x 3cm x 2.5cmApproximate weight for 1 piece: 30g LargeApproximate size for 1 piece: 6cm x 5cm x 4.5cm Approximate weight for 1 piece: 200g Quantity: 1 pc We do our best to buy quality products- although not every rock is the same. If you choose to purchase the "staff pick option", we will select the best of the batch for you. Otherwise, it will be at random from the larger batch we have in stock.