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Round|Natural|GIA

2.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6535246891

Certificate GIA 6535246891

Diamond specifications and retailer prices

From $22,458 USD
As of October 30, 2026
Save $15,779 USD (41%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $38,237 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6535246891. Listed at 22 retailers as of October 26, 2026, with prices from $22,458 to $38,237, a $15,779 spread on the same certified stone. MOH London lists it at $38,237. 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
F
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6535246891
Dimensions8.94 × 8.83 × 5.34 mm
L/W Ratio1.01
Top View
8.94 mm8.83 mm2.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6535246891
Side View
Table 55.0%Crown 32°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 60.1%

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: $38,237 USD|Low: $21,282 USD|High: $38,646 USD|Avg: $26,491 USD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 3$21,282 USD
Retailer 6$21,530 USD
Retailer 11$22,478 USD
Retailer 10$23,812 USD
Retailer 9$25,188 USD
Retailer 4$26,601 USD
Retailer 8$28,140 USD
Retailer 5$28,219 USD
Retailer 2$28,525 USD
Retailer 7$29,439 USD
MOH London$38,237 USD

40 data points across 11 retailers

22 retailers$22,458 USD to $38,237 USD

Retailer 1
-
$21,530 USD
Price last confirmed 7 days ago
A
Retailer 2
-
$22,458 USD
View
A
Retailer 3
-
$22,478 USD
View
A
Retailer 4
-
$22,670 USD
View
A
Retailer 5
-
$23,010 USD
CA$31,958 CAD
View
B+
Retailer 6
-
$23,812 USD
View
Final sale: no returns
Retailer 7
-
$24,451 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$25,188 USD
View
B+
Retailer 9
-
$26,070 USD
View
B+
Retailer 10
-
$26,070 USD
View
Retailer 11
-
$26,134 USD
View
Price last confirmed 7 days ago
B+
Retailer 12
-
$26,488 USD
View
B+
Retailer 13
-
$26,601 USD
£20,945 GBP
View
B+
Retailer 14
-
$26,940 USD
View
B+
Retailer 15
-
$27,507 USD
View
B+
Retailer 16
-
$28,140 USD
View
B+
Retailer 17
-
$28,219 USD
£22,220 GBP
View
B+
Retailer 18
-
$28,525 USD
€27,167 EUR
View
B+
Retailer 19
-
$28,534 USD
View
B
Retailer 20
-
$29,439 USD
View
B
Retailer 21
-
$34,639 USD
View
Most Expensive
B
MOH London
97D4BD44F · Oct 26
$38,237 USD
£30,108 GBP
View
21 more retailers have this diamond
Prices start from $22,458 USDSave up to $15,779 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
$22,458 USD