(CNN) – The most important vivid-blue diamond is up for grabs for a fairly penny.

It’s referred to as “The De Beers Cullinan Blue,” and Sotheby’s says it may promote for not less than $48 million.

The 15.1 carat gem can be the biggest, internally flawless, set lower vivid blue diamond that the Gemological Institute of America has ever appraised.

The company has additionally deemed the diamond “fancy vivid blue,” the very best colour grading potential.

The large rock is anticipated to be positioned for public sale at Sotheby’s Hong Kong Luxurious Week in April.

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