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| Hope Diamond |
2- There are many diamond mine in Africa.
3- Diamonds were formed 3.3 billion years ago.
4- Blu Hope Diamond is one of the most famous diamond in the world.
5- The diamond is the hardest natural substance found on the earth.
6- The Koh-I-Noor is the biggest diamond of world.
7- It create from only pure carbon.
8- In their purest state, diamonds are brilliant and entirely colourless.
9- Australia is producing most diamonds in volume.
10- Diamond is a most valuable materials of world, which are used to make ornament.
11- Diamonds are found in a variety of colors. Blue and pink diamonds are among the rarest, and yellow and brown as among the most common.3- Diamonds were formed 3.3 billion years ago.
4- Blu Hope Diamond is one of the most famous diamond in the world.
5- The diamond is the hardest natural substance found on the earth.
6- The Koh-I-Noor is the biggest diamond of world.
7- It create from only pure carbon.
8- In their purest state, diamonds are brilliant and entirely colourless.
9- Australia is producing most diamonds in volume.
10- Diamond is a most valuable materials of world, which are used to make ornament.
12- Most natural diamonds are formed at high-pressure & high-temperature conditions existing at depths of 140 to 190 kilometers in the Earth mantle.
13- Every year to raise up 26000 kg diamond, which value are 9 billion dollar. and about one lac kg are synthesized annually.
14- Over 75% of the mined diamonds go to industry each year, with such applications from windows to phonograph needles and just 25% are of gem quality.
15- Diamonds can also be produced synthetically in a high-pressure high-temperature process in laboratory.
16- Excellent optical and mechanical properties, combined with efficient marketing, make diamond the most popular gemstone.
