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101.29
carats
De Beers mine, South Africa
Loaned by SIBA Corp.
Strongly colored diamonds weighing more than 100 carats are extremely
rare, making this vivid yellow diamond truly exceptional. The color
is the result of nitrogen atoms that replaced some of the crystal’s
carbon atoms. The gem is named after its former British owner, Major
Alfred Ernest Allnatt. Photo credit
for photograph of
The Allnatt
The Gemological Institute of America
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