Queen's Williamson diamond brooch: Reason why it's valued at
Williamson pink diamond - Wikipedia
Williamson Pink Star: Rare Diamond To Fetch $21 Million At Auction
Ultra-rare pink diamond considered the biggest ever of its kind
Ultra-rare pink diamond considered the biggest ever of its kind
Extremely rare' pink diamond linked to Queen Elizabeth sells for
World's Most Sought-After Gems: Natural Fancy Colored Pink
One of the 'purest, pinkest diamonds' to go under the hammer
World's First Ever Public Tender Sells 2.00-Carat Fitzpatrick