This is a Fancy White Diamond, according to a GIA study on these Fancy White Diamonds, 82% of them are Type 1aB diamonds. These are rare diamonds that can be as old as 1.4billion years and found about 250km below the earth surface. These Fancy White diamonds have a different chemistry from D - Z type 1aB diamonds.
Fancy white diamonds receive their colour from nano-inclusions to micro-sized inclusions.
