Corundum Mineral Group: OXIDES
RocksForKids.com
| Corundum is the hardest mineral
that is easily found in large sizes. Although diamonds are harder, they
are very rare. Corundum will scratch almost everything except for
diamonds. The most famous variety of corundum is the ruby. |
|
 SPECIMEN ORIGIN: Thunder Bay, Ontario, CANADA |
|
 SPECIMEN ORIGIN: INDIA |
Ruby |