The teams research waspublishedlast month in the Journal of Earth System Science.
According to the Smithsonian Institution, the Hope Diamond was likely mined from the Kollur Mine before 1668.
At the time the stone was 112 3/16-carats; it has since been slimmed down to 45.52 carats.
The Hope Diamond in a pendant of white diamonds.Photo:Chip Clark / Smithsonian Institution
The Koh-i-Noor is 105.6 carats.
The diamonds were found in placer minesmines built to excavate minerals from streambed deposits.
The researchers concluded the precious gems origins are likely 1.1-billion-year-old rocks in the Wajrakarur Kimberlite Field.
LiveScience reportedthat the diamonds are missing inclusions that can clue geoscientists into the environments in which gemstones formed.
It makes the rocks all the glorious to look at, but leaves more of the science to guesswork.
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Making the stuff presents a tougher test.
