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Oval|Natural|GIA

2.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 2231892154

Certificate GIA 2231892154

Diamond specifications and retailer prices

From $21,932 USD
As of October 29, 2026
Save $8,850 USD (29%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $33,980 USD at MOH London · As of October 26, 2026
View at MOH London

About this 2.51ct natural oval diamond

This 2.51ct natural oval sits in the two to three carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2231892154. Listed at 8 retailers as of October 27, 2026, with a 40% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.27°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 2231892154
Dimensions10.50 × 7.51 × 4.77 mm
L/W Ratio1.40
Girdle conditionVery Thick
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
10.50 mm7.51 mm2.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2231892154
Side View
Table 61.0%Crown 39.27°Girdle: STK-VTKPavilion 40°Culet: NoneDepth 63.5%

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: $33,980 USD|Low: $21,932 USD|High: $34,644 USD|Avg: $26,486 USD|-1.8%
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 9$21,932 USD
Retailer 10$23,230 USD
Retailer 4$24,444 USD
Retailer 8$24,534 USD
Retailer 6$25,183 USD
Retailer 11$25,463 USD
Retailer 7$25,983 USD
Retailer 3$26,502 USD
Retailer 2$29,981 USD
Retailer 5$30,782 USD
MOH London$33,980 USD

24 data points across 11 retailers

8 retailers$21,932 USD to $30,782 USD

A
Cheapest Retailer
-
$21,932 USD
A
Retailer 2
-
$24,444 USD
£19,247 GBP
View
A
Retailer 3
-
$24,534 USD
View
Retailer 4
-
$25,183 USD
View
Price last confirmed 8 days ago
Retailer 5
-
$25,983 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$29,981 USD
View
B+
Retailer 7
-
$30,782 USD
View
Most Expensive
MOH London
BFFB4EC7C · Oct 26
$33,980 USD
£26,756 GBP
View
Price last confirmed 7 days ago
7 more retailers have this diamond
Prices start from $21,932 USDSave up to $8,850 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 Oval
$21,932 USD