Nickel - Highly Polished Density Cube 10x10x10mm

Each Nickel cube is solid and of high purity of 99.5%, highly polished by hand for many hours to reach a mirror finish, and laser engraved with its periodic info. This is an heirloom piece that will last forever. Size: 10x10x10mm Weight: 8.9g  Sample Purity: 99.5% Surface: Mirror Finish *Each cube comes with an InvisiDisplay™ Case. Interesting facts about Nickel It was discovered by Axel Fredrik Cronstedt in 1751. It is a silvery-white lustrous metal with a slight golden tinge. It belongs to the transition metals and is hard and ductile. Meteoric nickel is found in combination with iron, a reflection of the origin of those elements as major end products of supernova nucleosynthesis. An iron-nickel mixture is thought to compose Earth's outer and inner cores. Its use (as a natural meteoric nickel-iron alloy) has been traced as far back as 3500 BCE.  The global production of nickel is presently used as follows: 68% in stainless steel; 10% in nonferrous alloys; 9% in electroplating; 7%