Colour
- Colour is one of the most attractive properties of a mineral.
- The colour of a mineral can also be a clue to its identity.
- Corundum is white when pure.
- When corundum contains iron and/or titanium, it is blue and called a sapphire.
- When corundum contains chromium, it is red and called a ruby.
- The colour of a mineral can also be a clue to its identity.
- Corundum is white when pure.
- When corundum contains iron and/or titanium, it is blue and called a sapphire.
- When corundum contains chromium, it is red and called a ruby.
Mr.Hong's slide show