Every cycle produces a wave of peak gold commentary, and every cycle it is treated as new. The supply side does matter — just not in the way the headlines imply. This edition sets out what mine output actually determines and what it does not.
The arithmetic that defuses most supply headlines
There is an estimated 216,000 tonnes of gold above ground. Annual mine supply runs roughly 3,000 to 3,700 tonnes. New production therefore adds something on the order of 1.5 to 2 per cent to the existing pool each year.
That single ratio explains why a major mine outage rarely moves the price for long, and why the behaviour of existing holders dominates. Gold is a stock market masquerading as a flow market. Almost every ounce that will trade this year has already been mined.
What the cost curve does set
All-in sustaining cost is the industry's attempt to state what it really costs to keep producing an ounce, including sustaining capital and site overheads. It is imperfect and inconsistently defined between producers, but the aggregate curve is still informative: prices that sit below the upper cost quartile for long enough cause the highest-cost operations to curtail, and curtailment is a slow, sticky decision.
This produces a soft floor rather than a hard one. Producers hedge, high-grade their deposits to survive a weak patch, and defer stripping — all of which can keep uneconomic output flowing for quarters. Anyone treating the cost curve as a guaranteed price floor is reading a tendency as a rule.
The lag nobody prices
The gap between a discovery and a producing ounce is routinely a decade or more: resource definition, feasibility work, permitting, financing, construction and ramp-up. Grades in most major districts have been declining for years, which means more rock moved and more energy consumed per ounce, and energy is now a first-order input cost rather than a footnote.
The consequence is that supply cannot answer a demand shock inside the horizon that shock plays out over. A sustained high price does eventually produce more metal. It does not produce it this year, or next.
Recycling is the real shock absorber
Scrap has historically supplied roughly a quarter to a third of annual supply, and unlike mine output it responds within weeks. Price spikes pull jewellery and industrial scrap out of drawers and into refineries, which is why sharp rallies tend to be self-limiting without any change in mine plans.
Watch this closely during a fast move: if refinery throughput and scrap flows are surging while the price climbs, the rally is meeting elastic supply. If the price is climbing and scrap is not appearing, holders are choosing not to sell, which is a materially more durable move.
How we use the supply side
Not as a price signal. As a constraint: it tells us how far the price can fall before output responds, how long any response will take, and how quickly a spike is likely to be capped by recycling. Those are boundary conditions on the other drivers, and boundary conditions are more useful than forecasts.
On the programme
The supply block on 10 October covers capex cycles, grade decline, permitting timelines and what producers see that spot does not. Educational content only — not investment advice.