CaratHunter
Plans
Round|Natural|GIA

2.51ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2557717803

Certificate GIA 2557717803

Diamond specifications and retailer prices

From $21,660 USD
As of October 29, 2026
Save $12,767 USD (37%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $34,427 USD at MOH London · As of October 26, 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 2557717803. Listed at 7 retailers as of October 26, 2026, with prices from $21,660 to $34,427, a $12,767 spread on the same certified stone. MOH London lists it at $34,427. 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
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557717803
Dimensions8.64 × 8.69 × 5.38 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather, Needle
Top View
8.64 mm8.69 mm2.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557717803
Side View
Table 58.0%Crown 35.5°GirdlePavilion 40.8°CuletDepth 62.0%

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 29
Current: $34,427 USD|Low: $21,660 USD|High: $35,672 USD|Avg: $28,428 USD|-2.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 7$21,660 USD
Retailer 3$25,476 USD
Retailer 5$25,514 USD
Retailer 6$26,324 USD
Retailer 2$30,378 USD
Retailer 4$31,186 USD
MOH London$34,427 USD

41 data points across 7 retailers

7 retailers$21,660 USD to $34,427 USD

A
Cheapest Retailer
-
$21,660 USD
A
Retailer 2
-
$25,476 USD
£20,060 GBP
View
A
Retailer 3
-
$25,514 USD
View
A
Retailer 4
-
$26,324 USD
View
B+
Retailer 5
-
$30,378 USD
View
B+
Retailer 6
-
$31,186 USD
View
Most Expensive
B
MOH London
43443D64C · Oct 26
$34,427 USD
£27,108 GBP
View
6 more retailers have this diamond
Prices start from $21,660 USDSave up to $12,767 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
$21,660 USD