Monthly Analysis
October 2025 Diamond Market Report
Data as of October 31, 2025
Diamond Market Snapshot
In October 2025, the CaratRadar Diamond Price Index stood at $4,225, reflecting the weighted average retail price across 5,671,780 certified diamonds tracked from leading diamond retailers worldwide. Natural diamonds averaged $6,575 compared to $2,704 for lab-grown equivalents, a ratio of 2.4x.
Shape-by-Shape Analysis
Month-over-month price changes by shape and diamond type.
Round
Lab Grown
$2,538
1,141,687 diamonds
vs last month
-2.3%Natural
$5,317
1,199,134 diamonds
vs last month
-0.2%Oval
Lab Grown
$3,247
503,697 diamonds
vs last month
-3.9%Natural
$9,124
237,525 diamonds
vs last month
-1%Cushion
Lab Grown
$3,186
232,435 diamonds
vs last month
-0.6%Natural
$11,034
109,440 diamonds
vs last month
-1.5%Princess
Lab Grown
$2,310
207,524 diamonds
vs last month
-2%Natural
$6,895
90,318 diamonds
vs last month
-3.7%Emerald
Lab Grown
$2,679
364,618 diamonds
vs last month
-1%Natural
$7,267
216,476 diamonds
vs last month
+0.6%Pear
Lab Grown
$2,391
322,056 diamonds
vs last month
-2.1%Natural
$6,052
160,883 diamonds
vs last month
-0.4%Marquise
Lab Grown
$2,377
187,127 diamonds
vs last month
-1.7%Natural
$6,269
44,193 diamonds
vs last month
-2.1%Radiant
Lab Grown
$2,862
325,350 diamonds
vs last month
-0.7%Natural
$12,939
63,518 diamonds
vs last month
-2.1%Heart
Lab Grown
$2,616
107,643 diamonds
vs last month
-1.2%Natural
$5,377
74,581 diamonds
vs last month
-1.1%Asscher
Lab Grown
$2,996
51,280 diamonds
vs last month
+0.9%Natural
$7,178
32,295 diamonds
vs last month
0%Key Takeaways
- ✓Lab-grown diamonds continue to offer significant value compared to natural equivalents.
- ✓Round and oval cuts remain the most liquid market segments with the most comparable listings.
- ✓Price spreads between retailers vary significantly, so use CaratRadar to find the best price for the exact same certified stone.
About This Report
This report is generated automatically from CaratRadar's live diamond pricing database, which aggregates daily data from major diamond retailers. All prices are averages across active listings and may not reflect individual diamond prices. Data updated daily.
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