Piece is likely to fetch up to $800,000 in New York.
Piece, featuring a 3.60-carat diamond, has a high estimate of $401,800.
Jeweler also plans to expand lab-grown offering from one to 12 stores in coming year.
Around 20 lots will feature at the Joaillerie Paris online sale.
Most of the AI being sold to the trade fails on a real stone. Eliran Dahan and Tal Kenig,
cofounders of 3D Foundry Labs, talk about what works instead.
Supreme Court of British Columbia grants company extension on creditor protection.
Piece was top lot at $11.7 million Geneva Fine Jewelry sale.
Country now accounts for more than half of total group revenue.
Revenue up 0.5% to $757.1 billion for the month.
Steady US demand for 2 ct. and larger diamonds, especially in long fancies.

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