The Gemological Institute of America (GIA) has evaluated more than 30 rare and historically significant jewels ahead of Christie’s Magnificent Jewels auction, taking place on 17 June in New York. Among the most notable is the Marie-Thérèse Pink, a 10.38-carat diamond graded Fancy Purple-Pink by GIA associated with one of history’s most iconic figures, Queen Marie-Antoinette of France, and later, her daughter, Duchess Marie-Thérèse of Angoulême.
Estimated by Christie’s at between US$ 3 million and US$ 5 million, the ring stands out for its vibrant purple-pink hue, modified brilliant kite cut, and royal provenance. Likely originating from India, where purple-pink diamonds are seldom unearthed, it was crafted in the mid-1700s. The Marie-Thérèse Pink is believed to have been passed down from Queen Marie-Antoinette to her daughter, Duchess Marie-Thérèse of Angoulême, and subsequently to her niece, Duchess Marie-Thérèse of Chambord, making this gem unique from both a gemological and historical perspective.
“GIA evaluated the Marie-Thérèse Pink in advance of the auction, providing a detailed gemmological assessment that confirms the diamond’s colour origin and internal characteristics,” said Tom Moses, GIA’s Executive Vice President and Chief Laboratory and Research Officer. “Through our evaluations, GIA helps record the properties and history of these notable diamonds.”
In addition to the Marie-Thérèse Pink, GIA evaluated more than 30 other exceptional jewels to be presented at the auction. One of the items is an unmounted diamond weighing more than 60 carats, notable for its symmetry, internal clarity and overall brilliance. Another highlight is a diamond pendant necklace that features classical European design elements.
With increased global attention on coloured diamonds and the closure of sources such as the Argyle Mine in Australia, stones like the Marie-Thérèse Pink are physical records of what nature and history have produced, preserved and passed down.
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