Emeralds hold at $146 a carat; rubies wait their turn
Gemfields' higher-quality emerald auction took $26.8 million, selling 36 of 37 lots at an average $146.08 a carat. A 10% slide in the rupee weighed on Indian buyers, and the miner is treading carefully on rubies after a $51 million loss.
By The Colour Desk
What changed
Gemfields' latest auction of higher-quality rough emeralds closed at $26.8 million, a result the miner will take as a steadying hand under a jittery colour market.
What it means
- $146 a carat with a 99%-by-weight clearance is a genuinely good number, and it says the ceiling of the colour market is intact even as the middle sags. But read the ruby decision and the rupee line together and the picture sharpens: this is a producer rationing supply to protect price because it cannot afford a weak print.
- Emeralds held the line this week. Whether rubies get the same disciplined treatment, or get pushed to market to plug a hole, is the number the desk will be watching next.
Key figures
| auction total | $26.8M |
|---|---|
| average / carat | $146.08 |
| lots sold · 99% by weight | 36/37 |
| rupee vs $ since Sept | −10% |
Source: Gemfields emerald auction
The ceiling of the colour market is holding
Held in London over 4 to 21 May and reported in recent days, the sale cleared 36 of its 37 lots, 97% by number and 99% by weight, at an average of $146.08 a carat.
In a year when almost every hard-luxury category has been marked down, an emerald book that sells through at those prices reads as quiet strength.
The stones come from Kagem, the Zambian mine Gemfields owns 75%, with the Industrial Development Corporation of Zambia holding the rest.
Adrian Banks, the company's managing director of product and sales, framed the demand as real but cautious: appetite for higher-quality emeralds remains stable, he said, while the market exercises a degree of caution against a backdrop of geopolitical tension and macro uncertainty. The caveat had a currency attached.
The Indian rupee has lost roughly 10% against the dollar since September 2025, and India is where much of the world's rough colour is cut; a weaker rupee makes every dollar-priced lot dearer at the bench.
Clearance · percent of book sold
Source: Gemfields emerald auction
What Gemfields is not selling matters too
What Gemfields did not do this cycle is as telling as what it did. The company has been holding back on rubies, pacing its higher-value ruby offering rather than forcing goods into an uncertain room.
That is a producer managing scarcity deliberately, the colour-market equivalent of De Beers keeping rough in the vault, except that Gemfields is doing it from a position of financial strain rather than strength.
| Figure | |
|---|---|
| By Weight | 99% |
| By Lot | 97% |
Kagem higher-quality emerald auction, London A near-total clearance: the emerald book sold through. Carat Capital graphics desk.
A good auction does not erase a bad year
The strain is real. Gemfields posted a $51 million loss for 2025, and it has spent this year raising capital and trimming to steady the balance sheet. An emerald sale that performs is oxygen, but a single strong auction does not reverse a loss of that size.
The read across the colour trade is that the top of the market, signed, high-clarity, provenance-backed stones, is holding, while the broader book waits on the same macro clouds hanging over diamonds and watches.
The story so far
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Method
Kagem higher-quality emerald auction, London