Price of Diamonds Home
Price of Diamonds
Diamond Listings
Diamond Buying Checklist
Diamond Glossary
Other Gemstones
Diamond Prices Lists and Charts
GIA and IGI Diamond Prices
Diamond Price List
Diamond Charts
Weight Categories
Carat Weight & Size Charts
Calibration Charts
Proportions of Diamonds
Appraising Diamonds
American Gem Society
European Gemological Laboratory
Gemological Institute of America
Diamond Certification Laboratory of Australia
Diamond Appraisal
Diamond Appraisers
ATGA Codes
Laboratory List
Diamond Testing
Diamond Broker
Appraisal abbreviations
Diamond Basic Information
Diamond Facts
Diamond Ring Tension Setting
DeBeers Diamonds
Diamond Formation
The 4 C's of Diamonds
Buy Diamonds
Diamond Clarity
Diamond Color
Diamond Cut
Diamond Weight
Diamond Flaws
Harmonized System Codes
Additional Information
How to Buy Loose Diamonds
Diamond Selling
Diamonds in Canada
Diamonds - How to Clean
Da Vinci Diamond Cut
Diamond Fakes
Diamond Archives
How to Sell Your Diamond
Famous Diamonds
Diamond Formation
Diamond Properties
Diamond Cutting
Diamond Substitutes
Diamonds are made of the element known as carbon. The same as the carbon in your body or graphite or Talc even. The difference is in the degree of concentration. The more concentrated the element the closer packed its molecular structure and the denser it becomes.
To make a diamond requires a minimum pressure of 435,113 pounds per square inch (psi or 30 kilobars) with a temperature of 400 degrees Fahrenheit (205 Celsius). Most diamonds are thus formed around 100 miles (160 Kilometers) below the earth's surface. Where such conditions exist.
Diamonds eventually make their way to the surface in what are known as Kimberlite pipes. These are basically channels of molten lava rising like an elevator through the earths mantle and crust. The magma cools over time leaving the conical veins of kimberlite rock that contains the diamonds. Kimberlite is a bluish rock that diamond miners look for when seeking out new diamond deposits. Many of these are around and they are names after the Kimberley region of South Africa where they are commonly found. Most of these eruptions occurred around 1,100 million and up to 20 million years ago.
Diamonds are often found in river beds where they have become dislodged from the kimberlite pipes and then rain or glaciers might move the diamonds over thousands of kilometers or miles from their original location. Diamonds can be found in Australia, Borneo, Brazil, Russia and many African countries, including South Africa and Zaire.
Diamonds are found as rough dull looking stones and require polishing and finishing to resemble the diamonds that we know so well.