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Nicky Hilton, Ring

Webbe/Splash News, Dara Kushner/INFphoto

Bring on the bling!

Nicky Hilton hasn't been shy about flaunting her blinding sparkler since her engagement was revealed earlier this month. And now, Kathryn Clark from Eshed Diamonds is giving E! News the breakdown on Ms. Hilton's massive rock.

"The carat size looks between 6 to 8 carats, and the shape looks square, which could be a Royal Asscher Cut," Clark dished of the massive rock.

As for color and clarity? "It looks white, which means it's probably a collection GIA—meaning either D, E or F color, and most likely a VVS clarity minimum." In plain English, it's a really nice diamond.

Now the most pressing question: How much does the sparkler cost? Clark estimates the ring falls in the hefty $500,000 to $800,000 range. Wowza!

The 30-year-old is engaged to longtime beau James Rothschild, British heir to the European banking family. There's still no word on a wedding date, but we've got bigger issues at hand—mainly, what will the dress look like?!