Mirror Polished Solid Metal Cubes // Unusual Metals (Tier II)

Elemental metallic 1 cm elemental cubes These highly polished cubes are great educational tools Story Each cube is highly polished by hand and laser engraved with its periodic info. Size: 10x10x10mm Surface: Mirror Finish We brought you some interesting exotic metals in our TIER I, and now we are introducing you the unusual elements: Niobium, Tantalum, Hafnium, Rhenium, Thulium, Lutetium, and Scandium. Each cube is solid and of high purity, highly polished by hand for many hours to reach a mirror finish, and laser engraved with the element's periodic info. This is an heirloom piece that will last forever. Here are some interesting facts: * Niobium (8.57 g/cm3): It got its name from the Greek goddess of tears Niobe. It is almost always found side by side with Tantalum in nature, they are interesting "indispensable twins". It is physiologically inert and hypoallergenic, used in prosthetic and implant devices, such as pacemakers. * Tantalum (16.69 g/cm3): It is one of the refractory m