Rough-Price Hike Boosts Gem Diamonds’ Revenue

Average amount per carat up 42% year on year at $1,501.

Prolonged Rough-Industry Slump Deepens Gem Diamonds’ Loss

Average value per carat down 21% to $1,105.

Gem Diamonds Full-Year Revenue Dips

Sales down 36% to $97.7 million in 2025.

Weak Prices, Lack of Large Stones Hit Gem Diamonds

Revenue for third quarter down 40% year on year.

Gem Diamonds Chops Four Years Off Letšeng Mine Life

Miner reports loss of $11.7 million in second half.

Weak Prices Send Gem Diamonds’ Profit Plunging

Average value per carat down 24% in 2023.

Gem Diamonds Recovers 113ct. Rough from Letšeng

Stone is third over 100 carats miner has found at deposit this year.

Lower Average Price Dents Gem Diamonds Sales

Annual revenue falls amid weak demand for rough.

Letšeng Yields 295ct. Rough for Gem Diamonds

Diamond found in Lesotho mine is first over 100 carats this year.

2023’s Biggest, Most Valuable and Most Buzzworthy Diamonds

Here are the rough and polished stones that made for a memorable year.

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