Diamond

| Category |
| Diamond |
| Crystal Form |
| Cubic or isometric |
| Moh's Scale Hardness |
| 10 |
| Specific Gravity |
| 3.417–3.55 |
| Refractive Index |
| 2.417–2.419 |
| Sources |
| Angola, Australia, Botswana, Canada, Namibia, Russia, South Africa, Zaire. |
Diamond is the hardest natural substance, with a hardness of 10 on Mohs' scale, it can be only cut or polished by another diamond. Diamonds derives its name from the Greek word "adamas", which means "invincible". Diamonds are usually colourless. However, the impurities present in diamond can affect its colour variation, as a result diamond may be found in yellow, blue, pink and red in colour.
Diamonds from Indian deposits were known in ancient times. In the West the limited use of diamonds began in the late Middle Ages. The diamond, was thought to give its wearer strength in battle and to protect him against ghosts and magic. The first river-bed diamonds were probably discovered around 800 B.C.. Large demand of diamond provided an incentive for the production of false diamonds as early as 1675 in Paris.
Only 20% of diamonds are suitable for cutting as gemstones. The rest are discoloured or contain too many inclusions. Due to the extreme hardness of diamonds, it have a number of important industrial applications. Diamonds that did not meet gems requirement are used in drill bits, glass cutters, masonry saws for shaping building stone and for cutting other diamonds.
What is a diamond?
Diamond is carbon in its most concentrated form. Except for trace impurities/inclusions like boron and nitrogen.
Diamonds form at depths between 140–200 km below the surface of the Earth. At this depth the extreme heat and high pressure are necessary to forced the carbon atoms together to form molecules that make up the original composition of the diamond crystal. Diamonds require a long period of time to form under the above condition and were waited for a long time to carried to the surface. As a result of violent explosion of nature, such as volcanic eruption, diamonds are generally found in kimberlite pipes or as loose stones in alluvial deposits. And, most diamonds are more than 3.3 billion years old, but the kimberlite rock that diamonds come from are only about 100 million years old.
Caring
Grease and dirts can adheres to diamonds and affecting their colour and brilliance. Try not wear your diamond ring when you are washing your dishes, fatty deposits can be stuck to your diamond.
Due to diamond's hardness and durability, almost any cleaning technique is acceptable
Diamond can be also clean by letting it sit in hot water with dishwashing soap and clean with a soft toothbrush.
Diamond jewellery cleaners are available on the market as well.
Store your diamond separately from your other jewellery.
Diamonds are more durable then the metal mounts/prongs on your jewellery, so check the prongs occasionally to assure a secure fit.
