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Round|Natural|GIA

2.51ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6555357101

Certificate GIA 6555357101

Diamond specifications and retailer prices

From $20,455 USD
As of October 29, 2026
Save $14,534 USD (42%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $34,989 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 6555357101. Listed at 21 retailers as of October 29, 2026, with prices from $20,455 to $34,989, a $14,534 spread on the same certified stone. MOH London lists it at $34,989. 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 angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555357101
Dimensions8.72 × 8.80 × 5.32 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Natural
Top View
8.72 mm8.80 mm2.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555357101
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 60.7%

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: $34,989 USD|Low: $17,510 USD|High: $34,989 USD|Avg: $23,007 USD|+10.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 9$17,510 USD
Retailer 17$20,455 USD
Retailer 6$20,485 USD
Retailer 3$20,645 USD
Retailer 2$21,330 USD
Retailer 7$21,356 USD
Retailer 14$21,505 USD
Retailer 10$22,466 USD
Retailer 4$22,789 USD
Retailer 12$22,939 USD
Retailer 13$23,815 USD
Retailer 8$23,980 USD
Retailer 15$23,980 USD
Retailer 5$24,780 USD
Retailer 16$26,810 USD
Retailer 11$26,928 USD
MOH London$34,989 USD

30 data points across 17 retailers

21 retailers$20,455 USD to $34,989 USD

Retailer 1
-
$17,510 USD
HK$136,800 HKD
Price last confirmed 22 days ago
A
Retailer 2
-
$20,455 USD
View
A
Retailer 3
-
$20,485 USD
View
A
Retailer 4
-
$20,645 USD
View
A
Retailer 5
-
$21,330 USD
₹2,031,397 INR
View
A
Retailer 6
-
$21,356 USD
View
Final sale: no returns
A
Retailer 7
-
$21,505 USD
View
A
Retailer 8
-
$22,466 USD
£17,690 GBP
View
A
Retailer 9
-
$22,789 USD
View
A
Retailer 10
-
$22,939 USD
View
Retailer 11
-
$23,567 USD
View
Price last confirmed 30 days ago
A
Retailer 12
-
$23,815 USD
View
A
Retailer 13
-
$23,980 USD
View
A
Retailer 14
-
$23,980 USD
View
Retailer 15
-
$24,315 USD
View
Price last confirmed 29 days ago
A
Retailer 16
-
$24,780 USD
View
Retailer 17
-
$25,250 USD
View
Price last confirmed 31 days ago
B+
Retailer 18
-
$26,810 USD
View
B+
Retailer 19
-
$26,928 USD
€25,646 EUR
View
Retailer 20
-
$28,806 USD
View
Price last confirmed 32 days ago
Most Expensive
B
MOH London
1C18CEA27 · Oct 29
$34,989 USD
£27,550 GBP
View
20 more retailers have this diamond
Prices start from $20,455 USDSave up to $14,534 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
$20,455 USD