Platinum 2.71ct Tanzanite & VS Marquise Diamond Ring With Gemmological Report

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The 2.71ct Navette Tanzanite Ring

This beauty has now arrived. It will be heading off to WGI tomorrow to ascertain its retail replacement valuation (RRP), but it can be bought with the existing international IGI paperwork before heading to the lab tomorrow if you wish. 

​This exceptional piece features a 2.71-carat marquise-cut Tanzanite exhibiting a vibrant bluish-violet saturation, a characteristic highly sought after in natural Zoisite. The mixed-cut faceting ensures the pleochroic colours—the natural shifts between blue and deep violet—remain sharp across the entire elongated surface.

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​The Specifications

​Ring Size: Currently an N-O.

​The Centre Stone: Natural Zoisite (Tanzanite) weighing 2.71 carats.

​Cut: Marquise Mixed Cut, measuring 14.74 × 7.13 × 4.33 mm.

​The Diamonds: Thirty-eight (38) Round Brilliant-cut natural diamonds totalling 0.49 carats.

​Diamond Quality: VS clarity and G-H colour - eye clean and near colourless - wonderful quality. 

​Metal: White Gold, with a total mounting weight of 4.09g.

​Evidence: Fully graded by the International Gemological Institute (IGI), report number 40J5217023.

​The History

​Whilst the silhouette of this cut has 18th-century roots, the stone itself has a much more modern history. Tanzanite remained hidden until 1967, when it was discovered in the Merelani Hills of Tanzania. It was famously championed by Tiffany & Co., who recognised that its singular, rich violet-blue could rival the finest sapphires.

Because it is found in only one place on Earth—a tiny four-kilometre strip of land—geologists estimate the chances of finding another deposit elsewhere are less than one in a million.

​This piece pairs that "one-generation" gemstone with a cut traditionally known as the 'Navette' (French for "little ship"). 18th and 19th-century jewellers favoured this name because the elegant, tapering points mirrored the classic lines of a ship's hull. It is a shape designed to visually elongate the finger whilst maintaining a strong historical silhouette.

​I have a marquise tanzanite myself and absolutely adore it—this combination is going to make someone very happy 😊