GIA Color Grade: Fancy Vivid
yellow GIA Clarity Grade: VS2 Weight: 101.29
carats Owner: SIBA
Corporation
The Allnatt is named
after it's former British owner, Major Alfred Ernest Allnatt.
There are less than a dozen known diamonds that weigh over 100
carats and have a
strong yellow color, let alone a high clarity
grade. It is believed that the likely source of the
Allnatt is
the De Beers mine in South Africa.