Round|Natural|GIA

2.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2231668058

Certificate GIA 2231668058

Diamond specifications and retailer prices

From $24,653 USD
CA$34,240 CAD
As of October 30, 2026
Save $15,839 USD (39%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $40,491 USD at MOH London · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2231668058. Listed at 12 retailers as of October 30, 2026, with prices from $24,653 to $40,491, a $15,839 spread on the same certified stone. MOH London lists it at $40,491. 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
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2231668058
Dimensions8.62 × 8.71 × 5.36 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
8.62 mm8.71 mm2.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231668058
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.9%

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 30
Current: $40,491 USD|Low: $24,653 USD|High: $42,065 USD|Avg: $29,708 USD|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 5$24,653 USD
Retailer 3$24,807 USD
Retailer 2$26,200 USD
Retailer 7$26,355 USD
Retailer 4$26,893 USD
Retailer 12$27,007 USD
Retailer 8$28,463 USD
Retailer 9$30,572 USD
Retailer 6$30,779 USD
Retailer 11$30,846 USD
Retailer 10$30,980 USD
MOH London$40,491 USD

27 data points across 12 retailers

12 retailers$24,653 USD to $40,491 USD

A
Cheapest Retailer
-
$24,653 USD
CA$34,240 CAD
B+
Retailer 2
-
$24,807 USD
View
B+
Retailer 3
-
$26,200 USD
£20,630 GBP
View
B+
Retailer 4
-
$26,355 USD
View
B+
Retailer 5
-
$26,893 USD
View
B+
Retailer 6
-
$27,007 USD
View
B+
Retailer 7
-
$28,463 USD
View
B+
Retailer 8
-
$30,572 USD
View
B+
Retailer 9
-
$30,779 USD
€29,313 EUR
View
B+
Retailer 10
-
$30,846 USD
View
B
Retailer 11
-
$30,980 USD
View
Most Expensive
B
MOH London
52CCB158F · Nov 1
$40,491 USD
£31,883 GBP
View
11 more retailers have this diamond
Prices start from $24,653 USDSave up to $15,839 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
$24,653 USD