The Polar Star diamond is a 41.28 carat brilliant cushion-cut diamond, from the Golconda region in India. Its lower pavilion is arranged as an eight-pointed star, hence its name, from Polaris, the Northern Star. It is claimed that "the symmetry of the cut is so precise that it can be balanced on its culet" [1] It is a rare type IIa diamond, meaning that it contains no nitrogen or boron. It is likely D or E color ("colourless"), with a trace of pink, and has blue fluorescence.[1][2]
^ abWeldons (2015-01-23). "The Polar Star -". Weldons of Dublin. Retrieved 2021-03-30.
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