Round|Natural|GIA

2.51ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2396650924

Certificate GIA 2396650924

Diamond specifications and retailer prices

From $25,492 USD
As of November 1, 2026
Save $25,414 USD (50%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $50,906 USD at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2396650924. Listed at 7 retailers as of November 1, 2026, with prices from $25,492 to $50,906, a $25,414 spread on the same certified stone. Diamond Quarter lists it at $50,906. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2396650924
Dimensions8.66 × 8.60 × 5.40 mm
L/W Ratio1.01
Top View
8.66 mm8.60 mm2.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2396650924
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $33,564 USD|Low: $23,155 USD|High: $33,802 USD|Avg: $27,915 USD|+2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 8$23,155 USD
Retailer 3$25,492 USD
Retailer 7$26,674 USD
Retailer 2$27,540 USD
Retailer 5$29,380 USD
Retailer 6$29,380 USD
Retailer 4$30,360 USD
Retailer 1$33,564 USD

24 data points across 8 retailers

7 retailers$25,492 USD to $50,906 USD

B+
Cheapest Retailer
-
$25,492 USD
B+
Retailer 2
-
$27,540 USD
View
Final sale: no returns
B+
Retailer 3
-
$29,380 USD
View
B+
Retailer 4
-
$29,380 USD
View
B+
Retailer 5
-
$30,360 USD
View
B+
Retailer 6
-
$33,564 USD
€31,966 EUR
View
Most Expensive
B
Diamond Quarter
2.51SI1F2324FD96N · Nov 2
$50,906 USD
£40,083 GBP
View
6 more retailers have this diamond
Prices start from $25,492 USDSave up to $25,414 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.

B+
2.51ct Round
$25,492 USD