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A 102-carat ‘perfect’ diamond could become the most expensive jewel ever sold to an online bidder

The stone, described as a 102.39-carat D Colour Flawless Oval Diamond, is estimated to fetch between $10 million to $30 million.

By Adorian Assets Team

Quig Bruning, head of Sotheby's jewelry department in New York, emphasized the rarity of 100-carat diamonds, stating, "One hundred-carat diamonds as a rule are exceedingly rare. One hundred-carat D flawless are even more rare." While Sotheby's does not provide an official estimate, comparable diamonds have historically sold for amounts ranging from $11 million to $30 million.

The diamond, dubbed "the size of a lollipop" by Sotheby's, will be auctioned in Hong Kong on October 5, with online bidding starting earlier. If an online bidder secures the purchase, it could surpass the current record for the most expensive jewelry ever sold online, held by a pair of fancy blue and pink diamond earrings that sold for $6 million in 2016.

The 102-carat stone was crafted from a 271-carat rough diamond discovered in Ontario's Victor Mine in 2018. Over the course of a year, it was meticulously cut and polished by Diacore to enhance its "best brilliance, fire, and scintillation." Classified as a "Type IIa" diamond, it belongs to an elite subgroup known for being the most chemically pure with the highest level of transparency.

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During the COVID-19 pandemic, the demand for rare, large diamonds has surged as the wealthy seek long-term stores of value. Despite a decline in everyday jewelry sales at physical stores, the market for investible diamonds has remained robust. Wealthy buyers, particularly in Asia and the Middle East, view diamonds as a durable and portable hard asset. Sotheby's has experienced a significant increase in online jewelry sales, totalling $31 million this year, seven times more than last year.

Quig Bruning highlighted the shift to online platforms, stating, "The retail experience — going into the store, trying things on — that’s gone right now, or at the very least has changed substantially." He noted that buyers of such extraordinary diamonds intend to enjoy them, even if wearing such a sizable gem is unconventional.