In almost 250 years of auction history, only three pure vivid pink diamonds of over ten carats have appeared for sale, Christie`s said.
The pink diamond set in a ring is surrounded by a double row of pave white diamonds, highlighting the main stone, with a third row of small pink diamonds underneath.
In the realm of natural coloured diamonds, those of a distinct pink hue are the most sought after among gem connoisseurs - regularly achieving record auction prices.
While most pink diamonds exhibit a colour modifier, like purple, orange, brown or grey, the 16.08-carat stone shows no trace of secondary colour, making it both attractive and exceptionally rare.
The stone`s even colour distribution, combined with a balanced saturation and tone and straight pink hue, qualify the gem for the coveted `Fancy Vivid` colour grading from the Gemological Institute of America (GIA).
That only one in one hundred thousand diamonds possesses a colour deep enough to qualify as `Fancy` underscores its absolute rarity, Christie`s said.
In the Fancy Vivid pink range, diamonds of even five or six carats are rarely encountered in the sale room and those over ten carats are virtually unheard of.
In fact, fewer than 10 per cent of pink diamonds weigh more than one-fifth of a carat.
"As large and rare coloured diamonds of this calibre become increasingly hard to locate, this 16.08 carat Fancy Vivid pink diamond comes to market at a time when great gems are mirroring prices achieved for masterpieces in the world of fine art," said Rahul Kadakia, Christie`s International Head of Jewellery.
The world auction record price per carat for any pink diamond is held by The Vivid Pink, a cushion-shaped fancy vivid pink diamond of 5 carats that sold for an astounding 2,155,332 dollars per carat at Christie`s Hong Kong in 2009.
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