CaratSmall stones lead again as one-carat goods slip
RapNet's June index rose 4.2% for 0.30-carat diamonds and 1.3% for half-carats, while the one-carat benchmark fell 0.7%. Inventory cuts, not fresh demand, are doing the lifting at the small end.
The recovery in polished diamonds, such as it is, keeps arriving from the bottom of the size chart. The RapNet Diamond Index for June, published mid-July, rose 4.2% for 0.30-carat stones and 1.3% for half-carats, each an acceleration on May's gains. The three-carat category edged up 0.4%, turning positive after a soft spring.
A 4.2% monthly gain in half-point goods sounds like spring, but a recovery built on empty shelves is a fragile thing, and the 0.7% dip in one-carat stones is the tell. The size that anchors the bridal counter is still drifting, and that is the number that pays the trade's rent.
Until the one-carat line turns on real demand rather than the small end turning on thin inventory, the desk reads this as stabilisation, not recovery, the diamond market holding its breath, not catching it.
| Figure | |
|---|---|
| 0.30 Ct | +4.2% |
| 0.50 Ct | +1.3% |
| 3.00 Ct | +0.4% |
IThe gains keep coming from the smallest goods
The exception sat in the middle of the counter: the one-carat benchmark, the size most shoppers picture when they picture a diamond, slipped 0.7%.
The mechanism matters more than the percentages. Rapaport attributes the firmness in smalls to inventory reductions rather than a wave of new buying; dealers have stopped restocking melee and small goods, and the thinner shelves are letting prices correct upward.
It is a supply story dressed as a demand story, the market clearing an overhang rather than discovering fresh appetite. Prices rise because there is less to sell, not because more people are buying.
IIThin shelves, not fresh demand
The size split is its own signal about who is spending. Larger goods, two carats and up in the G-to-I colour, VS-to-SI clarity band, remained the strongest sellers in the United States, the province of buyers less troubled by the macro clouds. Rounds in the one-to-two-carat range showed what Rapaport called only mild improvement.
The barbell that has defined the polished market all year is still there: the top holds, the entry firms on scarcity, and the mass-market middle where most engagement rings live stays soft.
IIIThe one-carat line is the one that pays the rent
Set against De Beers' rough report the same week, the polished tape completes a coherent picture. Rough is being produced in volume and sold cheap; polished is recovering only where supply has been deliberately choked. Neither half of the pipeline is being pulled higher by consumers reaching for diamonds.
Both are being managed, by miners holding grades back and by dealers refusing to restock, into the appearance of stability.
01Method · the desk’s arithmetic+
June RapNet move by size · 1.00-ct fell 0.7%
The 4.2 percent month: small stones lead the market out of the hole
The first month the small end firmed, in full.
The trade, filed before the New York open.
Prices, tenders and the one story that moved the industry overnight. Ninety seconds.
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