A 5.72-carat fancy intense blue diamond sold for more than $8.8 million, making it the top lot of a varied and successful Christie’s Magnificent Jewels auction held Tuesday in New York. It was the ...

Algordanza's prices start at $3,000 for a 0.3 carat diamond ... similar weights and properties. "The diamonds can range from clear to very deep blue," Martoia said. "The more boron, the deeper ...

It's a lab-grown 1 carat diamond ... firm Tenoris reported a 20 per cent drop in lab-grown prices in 2023 and this continued in 2024. To put it bluntly, lab-grown diamonds are a terrible investment.