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Round|Natural|GIA

2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6392995370

Certificate GIA 6392995370

Diamond specifications and retailer prices

From $19,501 USD
As of October 28, 2026
Save $13,806 USD (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $33,307 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 6392995370. Listed at 14 retailers as of October 28, 2026, with prices from $19,501 to $33,307, a $13,806 spread on the same certified stone. MOH London lists it at $33,307. 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°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6392995370
Dimensions8.61 × 8.66 × 5.40 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
8.61 mm8.66 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6392995370
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

Caratlytics Score

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

Price History

Last verified: Oct 28
Current: $33,307 USD|Low: $19,181 USD|High: $33,529 USD|Avg: $24,286 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 6$19,181 USD
Retailer 4$19,501 USD
Retailer 2$21,695 USD
Retailer 8$22,950 USD
Retailer 9$22,950 USD
Retailer 10$23,710 USD
Retailer 5$24,703 USD
Retailer 3$25,699 USD
Retailer 7$28,462 USD
MOH London$33,307 USD

41 data points across 10 retailers

14 retailers$19,501 USD to $33,307 USD

A
Cheapest Retailer
-
$19,501 USD
B+
Retailer 2
-
$21,213 USD
View
B+
Retailer 3
-
$21,695 USD
£17,083 GBP
View
B+
Retailer 4
-
$22,274 USD
View
B+
Retailer 5
-
$22,950 USD
View
B+
Retailer 6
-
$22,950 USD
View
B+
Retailer 7
-
$22,981 USD
View
B+
Retailer 8
-
$23,710 USD
View
B
Retailer 9
-
$23,865 USD
View
Retailer 10
-
$24,703 USD
£19,451 GBP
View
Price last confirmed 30 days ago
B
Retailer 11
-
$25,699 USD
€24,475 EUR
View
B
Retailer 12
-
$30,052 USD
View
B
Retailer 13
-
$32,349 USD
£25,472 GBP
View
Most Expensive
B
MOH London
ADEFF7D67 · Oct 29
$33,307 USD
£26,226 GBP
View
13 more retailers have this diamond
Prices start from $19,501 USDSave up to $13,806 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
$19,501 USD