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Round|Natural|GIA

2.51ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2231730419

Certificate GIA 2231730419

Diamond specifications and retailer prices

From $20,072 USD
As of October 29, 2026
Save $11,107 USD (36%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $31,179 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2231730419. Listed at 7 retailers as of October 29, 2026, with prices from $20,072 to $31,179, a $11,107 spread on the same certified stone. MOH London lists it at $31,179. 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
E
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2231730419
Dimensions8.65 × 8.59 × 5.38 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Needle
Top View
8.65 mm8.59 mm2.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231730419
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.4%

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 29
Current: $31,179 USD|Low: $20,072 USD|High: $32,037 USD|Avg: $24,697 USD|-1.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 6$20,072 USD
Retailer 9$22,506 USD
Retailer 5$22,624 USD
Retailer 2$22,980 USD
Retailer 7$23,015 USD
Retailer 3$23,745 USD
Retailer 8$24,613 USD
Retailer 4$28,131 USD
MOH London$31,179 USD

30 data points across 9 retailers

7 retailers$20,072 USD to $31,179 USD

A
Cheapest Retailer
-
$20,072 USD
A
Retailer 2
-
$22,624 USD
View
A
Retailer 3
-
$22,980 USD
£18,095 GBP
View
A
Retailer 4
-
$23,015 USD
View
A
Retailer 5
-
$23,745 USD
View
B+
Retailer 6
-
$28,131 USD
View
Most Expensive
B+
MOH London
47F7D996C · Oct 29
$31,179 USD
£24,550 GBP
View
6 more retailers have this diamond
Prices start from $20,072 USDSave up to $11,107 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
$20,072 USD