Diamonds
The
word diamond is derived from the Greek word
"unbreakable".
Diamonds
are the strongest natural raw substance. They can only be cut by
another diamond, or a laser cutting tool. These gemstones come in
many colours: black, red, pink, brown and orange. However, white
diamonds are the most popular. Many people consider them the most
beautiful. The most expensive diamond is the pink diamond as they are
rare. Diamonds, some say, are a girl's best friend.
Diamonds are made
of carbon atoms
that are covalently bonded together. Most natural diamonds are formed
under high pressure and temperature in the craton (a part of the
lithosphere) of the Earth.
Diamonds
are valued for their strength, hardness and beauty. The beauty of
diamonds comes from its abililty to reflect and refract light.
The refractive index
of diamond is 2.4.
Intan
