Graphite from Colombo, Sri Lanka

Graphite, the softest mineral, and diamond, the hardest mineral, are both composed of pure carbon. Their different properties result from the way the carbon atoms are arranged in their crystal structures. Graphite is so brittle that merely rubbing it on a

Restrictions Only for United Kingdom

Arem Carbon Crystal Crystals Lanka Lead Mineralogy Minerals Ores Pencil Specimen Specimens

Features In These Collections

> Contributors > SCS