Diamonds found in nature
have the following characteristics that can be used for field
- Occurs as octahedral (cubic), rounded
- Can be colorless, yellow, brown, gray,
green and black due to the presence of impurities.
- Optically, pure diamonds are transparent
with adamantine luster (high index of refraction) and strong
dispersion of light.
- Very hard, ranking 10 on the Moh's
- Has a density close to 3.5 grams per
- Exhibits perfect cleavage, showing
- Insoluble in hydrochloric acid or
- Infusible, because diamonds have a
high melting point. Diamonds burn with difficulty, giving
off carbon dioxide only at temperatures above 800 degrees
Celsius, under ambient pressure.