Sunday, October 18, 2009

how are diamonds formed?

               Hello frnds,hey i hope all of u like diamonds let me say some information about diamonds.Diamonds are formed between 120-200 kms or 75-120 miles below the earth's surface.The scientific reasons says thay,the carbon that makes diamonds, comes from the melting of pre-existing rocks in the Earth's upper mantle.the temperature varies in the upper mantle.
Hey are you guys with me?theres lot of information is there for you.The carbon atoms to go deeper where it melts and finally becomes new rock, when the temperature reduces. If other conditions like pressure and chemistry is right then the carbon atoms in the melting crustal rock bond to build diamond crystals.If the temperature rises or the pressure drops then the diamond crystals may melt partially or totally dissolve. Even if they do form, it takes thousands of years for those diamonds to come anywhere near the surface.
       Diamond deposits are called Kimberlite Pipes or Blue Ground. These are also called Primary Mines. On the other hand, diamonds are also found at river beds. These are Alluvial Deposits. Diamond prices work on the basis of these 4 C's and they are all interdependent. 
                    The color of a diamond is determined by examining it face up and then face down. Now the color classification. According to G.I.A. standards, diamonds are classified from D to Z. D being colorless and Z, the most yellow or brown. Anything afterZ is considered to be Fancy Colored in yellow or brown colors.

let me tell you how diamonds are being classified as types,

i hope you all like this post my dear frnds.i feel great to share this valuable infromation to you all.

1 comment:

  1. Interesting information about diamond, add my knowledge about it