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Diamonds are brought to the surface in two main magma types with fairly extreme compositions. These are:

Kimberlites and Lamproites.

You can read more about them, below.

Volcanic pipes that blast diamonds to the earth's surface, also erupt garnet xenoliths onto earth's surface. Only about one in every 200 such pipes contain diamonds.

You can read more about the exploratory geology, below.

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Related Questions

How do kimberlite pipes and diamonds form?

Kimberlite pipes form when magma rises from deep within the Earth's mantle and rapidly reaches the surface, carrying diamonds and other minerals with it. The extreme pressure and temperature inside the mantle crystalize carbon atoms into diamonds within the kimberlite magma. When the kimberlite erupts onto the surface, it brings diamonds along, creating diamond deposits.


What is most magma?

magma


How does a metamorphic rock form into magma?

Metamorphic rock could become magma by collisions involving an oceanic plates. During subduction,any rock carried on the plate would return to the mantle and melt,forming magma


What is the most expensive item in Macy's?

Diamonds diamonds and more diamonds


Is there a diamond mine on Krakatoa?

no it does not


Is there a company known to have the best diamonds?

Debeers diamonds are the standard by which most diamonds are measured.


What is a common use of diamond?

The most common use of diamonds is for industrial tools, because industrial diamonds are the most common diamonds.


Are diamonds red?

Yes, diamonds can be naturally red. In fact, these are the most rare of natural diamonds.


Where diamonds are found in Europe?

Most jewelery stores in most cities in Europe sell diamonds.


Where are most raw diamonds cut?

Diamonds are cut in the Netherlands, in India, in Canada and Australia. India may cut the most diamonds, since most small stones are cut there.


What type of magma is most likely under the crust?

magma


What is the average size of a diamond?

Diamonds come in all sizes: 20% of which are gem-stone quality, the remainder are industrial diamonds. Most diamonds are tiny: gem-stone quality diamonds must be larger than most diamonds found, because of their use. Gem-quality diamonds must be visible, which is not true for industrial diamonds. Your answer, then, by logic, dictates that most diamonds an average diamond is much smaller than a pea.