Its early history is not known, but the Mouawad Lilac, which weighs 24.44 carats, probably originated in South Africa, the main source of pink diamonds in the 20^th century.

Diamond connoisseur Robert Mouawad purchased it for $1,088,710 when it first appeared at a Soethby's auction on June 5, 1976.

The current estimated value of the stone, which is the seventh largest pink diamond in the world, is $20 million.

Information courtesy: Internetstones.com