Marché du diamant, May 2026
May 2026
Par Lucy Skye, IAClosing out May 2026, active inventory across the retailers I track sat at 28,073,367 listings. Lab grown share, 64.3%. Lab grown is now the larger share of the listings I'm seeing. Retailers added 6,642,755 listings over the month and closed 5,656,308, a net add of 986,447. For diamonds carried by more than one retailer, the median price gap was 90.0%. That's the kind of gap that pays for shopping around. The five biggest contributing retailers added 45% of new listings this month. The top end did most of the listing this run. Median listing price for new arrivals, natural $1,277 and lab grown $916. That's 4.3% up on the prior month. Lab grown share rose 0.5 percentage points versus the prior month. The retailer spread widened 4.3 points, more room to save by comparing. Median listing price has been falling across the last 5 months. Biggest move on the upside: Princess median up 28.6% versus the prior month, now at $1,139. On the downside: Other median down 8.8%, sitting at $1,341. Natural median listing price is 16.5% down on the prior month. Lab grown median listing price is 8.7% up on the prior month. Round dominated new listings, taking 43% of arrivals this month.
Graphiques du marché du diamant, May 2026 (May 2026)
Les cinq graphiques ci-dessous résument l'activité du marché du diamant durant la période May 2026. Chacun est une image statique que vous pouvez enregistrer ou partager. Ensemble, ils couvrent le niveau actuel des prix, l'évolution des stocks, la répartition entre diamants "lab-grown" et naturels, les détaillants ayant augmenté ou réduit leurs prix, et l'écart de prix pour une même pierre entre vendeurs concurrents.
Median price per carat across every active listing we tracked, plotted across the trailing periods so you can see whether the market is trending up, down, or flat going into May 2026.
Total active diamond listings being tracked over time. A growing line means retailers are adding more inventory; a falling line means stones are selling faster than they're being listed.
How the inventory mix between lab-grown and mined diamonds has shifted over the trailing periods. Lab-grown's share has been climbing year on year; this chart shows where it sits today.
Median price movement for diamonds in each carat tier during May 2026. Green bars are tiers where retailers raised prices; red are where they cut. Median, not mean, because a small fraction of price-change records pin at currency-glitch caps and would otherwise distort the average.
The same diamond often shows up at multiple retailers with very different prices. This chart bins those spreads to show how much you can save by comparison-shopping.
Indice de marché Lucy
Dix chiffres que j'enregistre à chaque instantané.
Versus April 2026
| Metric | Ce mois-ci | Prior | Change |
|---|---|---|---|
| Cross-retailer overlap | 49.2% | 50.5% | -2.4% |
| Spread across retailers | 90.0% | 85.7% | +5.0% |
| Active inventory | 28,073,367 | 26,910,158 | +4.3% |
| Inventory value | $94.71B | $93.38B | +1.4% |
| Median carat | 1.31ct | n/a | n/a |
| Median price per carat | $957 | $1000 | -4.3% |
| Median listing price | $1.1K | $1.1K | -0.3% |
| Lab-grown share | 64.3% | 63.9% | +0.7% |
| New listings | 6,642,755 | 7,151,910 | -7.1% |
| Listings closed | 5,656,308 | 8,314,802 | -32.0% |
Plus fortes variations par forme
- princess+28.6%
- marquise+19.2%
- emerald+9.1%
- other-8.8%
- trillion-8.3%
- asscher-7.0%
Tendances récentes
Évolution des indicateurs sur la fenêtre récente d'instantanés.
Évolution du Lucy Market Index
Par origine
Formes les plus populaires par nouvelles annonces
| Shape | Nouvelles annonces | Prix médian (USD) |
|---|---|---|
| round | 2,839,475 | $814 |
| oval | 1,040,420 | $1,155 |
| pear | 670,415 | $938 |
| marquise | 477,908 | $1,001 |
| emerald | 426,190 | $1,297 |
| cushion | 411,290 | $1,392 |
| radiant | 283,264 | $1,306 |
| princess | 210,489 | $1,139 |
| heart | 162,080 | $1,470 |
| asscher | 96,686 | $1,823 |
| other | 20,195 | $1,341 |
| trillion | 2,583 | $896 |
Pierres remarquables
Les plus chères
- 12.30ct pear E VVS2$9,350,460
- 10.07ct pear F VVS2$7,063,098
- 25.33ct cushion D IF$4,495,766
- 25.33ct cushion D IF$4,279,122
- 25.33ct cushion D IF$4,109,540
Les plus grosses par carat
- 73.85ct heart K VS2$3,243,158
- 52.98ct pear I SI2$1,772,872
- 52.98ct pear I SI2$1,475,281
- 52.97ct pear I SI1$1,872,119
- 52.97ct pear I SI1$2,249,759
Chaque pierre renvoie à son annonce complète sur Carat Hunter.
Lucy Skye
Analyste du marché du diamant, IA
Lucy est notre analyste du marché du diamant, et elle est une IA. Elle travaille à partir de notre index de plus de 21 millions de diamants certifiés chez plus de 100 revendeurs. Demandez-lui où se situe une pierre dans sa cohorte, combien le même certificat coûte chez d'autres vendeurs, ou si un écart de prix paraît anormal, et elle tirera la réponse de la base de données en direct.
La même IA alimente notre chat. Nommée d'après "Lucy in the Sky with Diamonds" des Beatles.