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2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1539231448

Certificate GIA 1539231448

Diamond specifications and retailer prices

From $19,621 USD
As of October 30, 2026
Save $16,612 USD (46%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $36,233 USD at MOH London · As of October 29, 2026
View at MOH London

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1539231448. Listed at 11 retailers as of October 29, 2026, with prices from $19,621 to $36,233, a $16,612 spread on the same certified stone. MOH London lists it at $36,233. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.51
Carat
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1539231448
Dimensions8.61 × 8.65 × 5.42 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional twinning wisps, additional clouds, pinpoints and surface graining are not shown.
Top View
8.61 mm8.65 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1539231448
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $36,233 USD|Low: $19,621 USD|High: $36,474 USD|Avg: $26,039 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 7$19,621 USD
Retailer 4$22,489 USD
Retailer 6$23,203 USD
Retailer 2$23,270 USD
Retailer 8$23,762 USD
Retailer 9$26,873 USD
Retailer 5$27,489 USD
Retailer 3$28,000 USD
MOH London$36,233 USD

43 data points across 9 retailers

11 retailers$19,621 USD to $36,233 USD

A
Cheapest Retailer
-
$19,621 USD
B+
Retailer 2
-
$21,459 USD
View
B+
Retailer 3
-
$22,489 USD
View
B+
Retailer 4
-
$23,203 USD
View
B+
Retailer 5
-
$23,270 USD
£18,323 GBP
View
B+
Retailer 6
-
$23,762 USD
View
Retailer 7
-
$26,873 USD
£21,160 GBP
View
Price last confirmed 31 days ago
B+
Retailer 8
-
$27,489 USD
View
B
Retailer 9
-
$28,000 USD
€26,667 EUR
View
B
Retailer 10
-
$32,692 USD
View
Most Expensive
B
MOH London
82FF63EEA · Oct 29
$36,233 USD
£28,530 GBP
View
10 more retailers have this diamond
Prices start from $19,621 USDSave up to $16,612 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
2.51ct Round
$19,621 USD