50 pieces - Mineral Set Quality:Standard Chemical Composition: MnSiO₃

Chemical Composition: MnSiO₃

Chemical Composition: CO3

5cm x 3cm x 2

Approximate Size for 1 piece: 6cm Approximate Weight for 1 piece: 250g

50 pieces - Mineral Set Quality:Standard Chemical Composition: MnSiO₃Mined from: USA Description: 50 piece mineral set comprised of stones found in USA. Comes with mineral guides shown in photos. The stones are glued to the back page and all together permanently affixed to the cardboard box frame. A great learning and visual set for kids and especially classrooms. Chakra: All Size of 1 Mineral set: 10cm x 35cm x 3. 7cm Approximate Weight of 1 piece: 522g Quantity: 1 (50 piece set) We do our best to buy quality products