{
 "schema_version": 1,
 "methodology_version": "1.0",
 "release": "2026-05",
 "generated_at": "2026-06-12T22:20:43.111527Z",
 "unit": "USD per carat (pinned-rate internal unit of account; see methodology)",
 "sampling": "systematic 1-in-10 sample of listings; latest observation per listing per calendar month",
 "filters": {
  "carat_min": 0.25,
  "carat_max": 10.0,
  "ppc_min": 100,
  "ppc_max": 100000
 },
 "monthly_series": [
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   "month": "2025-12",
   "segments": {
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     "median_usd_per_carat": 757.96,
     "q1_usd_per_carat": 519.2,
     "q3_usd_per_carat": 1200.0
    },
    "natural": {
     "listings_observed": 359206,
     "median_usd_per_carat": 2148.5,
     "q1_usd_per_carat": 1593.33,
     "q3_usd_per_carat": 3408.33
    },
    "overall": {
     "listings_observed": 872843,
     "median_usd_per_carat": 1272.13,
     "q1_usd_per_carat": 658.33,
     "q3_usd_per_carat": 2150.24
    }
   }
  },
  {
   "month": "2026-01",
   "segments": {
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     "listings_observed": 529816,
     "median_usd_per_carat": 696.6,
     "q1_usd_per_carat": 487.94,
     "q3_usd_per_carat": 1105.2
    },
    "natural": {
     "listings_observed": 253305,
     "median_usd_per_carat": 2175.11,
     "q1_usd_per_carat": 1645.97,
     "q3_usd_per_carat": 3471.33
    },
    "overall": {
     "listings_observed": 783415,
     "median_usd_per_carat": 1052.43,
     "q1_usd_per_carat": 592.77,
     "q3_usd_per_carat": 1926.83
    }
   }
  },
  {
   "month": "2026-02",
   "segments": {
    "lab_grown": {
     "listings_observed": 1082352,
     "median_usd_per_carat": 658.53,
     "q1_usd_per_carat": 441.08,
     "q3_usd_per_carat": 978.88
    },
    "natural": {
     "listings_observed": 664822,
     "median_usd_per_carat": 2326.0,
     "q1_usd_per_carat": 1657.14,
     "q3_usd_per_carat": 3848.09
    },
    "overall": {
     "listings_observed": 1747420,
     "median_usd_per_carat": 1061.86,
     "q1_usd_per_carat": 575.12,
     "q3_usd_per_carat": 2110.0
    }
   }
  },
  {
   "month": "2026-03",
   "segments": {
    "lab_grown": {
     "listings_observed": 1442841,
     "median_usd_per_carat": 557.82,
     "q1_usd_per_carat": 365.28,
     "q3_usd_per_carat": 843.2
    },
    "natural": {
     "listings_observed": 757044,
     "median_usd_per_carat": 2218.18,
     "q1_usd_per_carat": 1590.0,
     "q3_usd_per_carat": 3598.0
    },
    "overall": {
     "listings_observed": 2199964,
     "median_usd_per_carat": 848.91,
     "q1_usd_per_carat": 460.0,
     "q3_usd_per_carat": 1886.63
    }
   }
  },
  {
   "month": "2026-04",
   "segments": {
    "lab_grown": {
     "listings_observed": 1371894,
     "median_usd_per_carat": 542.52,
     "q1_usd_per_carat": 379.59,
     "q3_usd_per_carat": 857.44
    },
    "natural": {
     "listings_observed": 777799,
     "median_usd_per_carat": 2258.54,
     "q1_usd_per_carat": 1585.45,
     "q3_usd_per_carat": 3661.53
    },
    "overall": {
     "listings_observed": 2149713,
     "median_usd_per_carat": 901.89,
     "q1_usd_per_carat": 458.86,
     "q3_usd_per_carat": 2000.0
    }
   }
  },
  {
   "month": "2026-05",
   "segments": {
    "lab_grown": {
     "listings_observed": 1317656,
     "median_usd_per_carat": 548.07,
     "q1_usd_per_carat": 401.05,
     "q3_usd_per_carat": 842.81
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    "natural": {
     "listings_observed": 735554,
     "median_usd_per_carat": 2261.59,
     "q1_usd_per_carat": 1574.58,
     "q3_usd_per_carat": 3670.0
    },
    "overall": {
     "listings_observed": 2053218,
     "median_usd_per_carat": 876.47,
     "q1_usd_per_carat": 470.94,
     "q3_usd_per_carat": 1956.52
    }
   }
  }
 ],
 "deltas": {
  "natural": {
   "mom_pct": 0.14
  },
  "lab_grown": {
   "mom_pct": 1.02
  },
  "overall": {
   "mom_pct": -2.82
  }
 },
 "cross_retailer_spread": {
  "lab_grown": {
   "multi_retailer_diamonds": 3663465,
   "avg_spread_pct": 117.8,
   "median_spread_pct": 95.5
  },
  "natural": {
   "multi_retailer_diamonds": 1594145,
   "avg_spread_pct": 61.8,
   "median_spread_pct": 45.6
  }
 },
 "counts": {
  "active_retailers": 118,
  "active_listings": 31631364,
  "certified_diamonds": 13334999,
  "cross_retailer_diamonds": 5472768
 }
}