What a beauty! The huge, rare gem once belonged to Archduke Joseph August of Austria
Flawless 76-carat diamond fetches $21.5 million at auction
Catch up with NBC News Clone on today's hot topic: Flawless 76 Carat Diamond Fetches 21 5 Million Auction Flna1C7049545 - Breaking News | NBC News Clone. Our editorial team reformatted this story for clarity and speed.
