0.39" 10mm Carbon Cube C up to 99.9% Pure Periodic Table Element Engraved Density Collection Science Education Display Block Cube + Acrylic Case Box -

0.39" 10mm Carbon Cube C up to 99.9% Pure Periodic Table Element Engraved Density Collection Science Education Display Block Cube + Acrylic Case Box -

HQRP-Crystal® 10mm Carbon Cube + Acrylic Cas Box; Density (g cm−3) - 1.8–2.1; Atomic number - 6; Relative atomic mass - 12.01; Melting point - 3825°C / 6917°F / 4098 K ; Boiling point - 3825°C / 6917°F / 4098 K. Average 1 Cubes weight: 1.82g / 0.064oz; Each 10mm cube made from 99.9% pure carbon and featuring attractive, ground surfaces and laser engraved label. Every cube perfectly finished with sharp edges and corners and no burrs. Makes a great gift for chemistry students, teachers and professors! All our minerals and crystals are carefully measured with digital measuring instruments that provide the high accuracy of numbers/values!