Pink Diamonds

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    Syllabus:GS3/ Science and Technology

    News

    • The researchers have found the “missing ingredient” for pink diamonds by measuring the age of elements of the crystals of an Argyle rock sample.

    Background

    • Pink diamonds are some of the world’s most expensive stones due their rarity and beauty.
    • More than 90% of all the pink diamonds ever found were discovered at the Argyle mine in the remote northwest of Australia.However most other diamond mines are located  in the middle of a continent.

    Ingredients for Forming Pink Diamonds

    • For formation of the Pink diamond three ingredients are needed. Two of the three ingredients for forming pink diamonds had already been known.
      • The first ingredient is carbon, and it must be more than 150 km deep.
      • The second is the right amount of pressure, to give the color to the diamonds. 
      • The third and missing ingredient was the event that sent the diamonds shooting up to the surface.
    • The immense pressure that twisted color into the diamonds occurred during collisions between western Australia and northern Australia 1.8 billion years ago

    The Missing Ingredient

    • According to the study published in the journal Nature Communications, the pink diamonds were brought to the earth’s surface by the break-up of the first supercontinent Nuna around 1.3 billion years ago.
    • When Nuna started to break up it re-aggravated the “scar” from that event. Magma shot up through this old scar and took the diamonds along for the ride.

    Significance

    • Knowing the “missing ingredient” for pink diamonds could assist future efforts to find the rare stones.
    • Also old mountain belts marking Nuna’s breakup near the edges of continents i.e. Canada, Russia, southern Africa and Australia have the potential to be home to a new “pink diamond paradise”.

    Source: TH