Round|Natural|GIA

2.50ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2146621603

Certificate GIA 2146621603

Diamond specifications and retailer prices

From £29,168 GBP
$38,843 USD
As of October 29, 2026
Save £10,695 GBP (27%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £52,889 GBP at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 2.5ct natural round diamond

This 2.5ct natural round sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2146621603. Listed at 12 retailers as of October 29, 2026, with a 37% 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

2.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2146621603
Dimensions8.65 × 8.59 × 5.40 mm
L/W Ratio1.01
Culet sizeNone
Top View
8.65 mm8.59 mm2.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2146621603
Side View
Table 58.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.6%

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: Oct 29
Current: £31,504 GBP|Low: £28,918 GBP|High: £39,864 GBP|Avg: £32,878 GBP|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 3£28,918 GBP
Retailer 4£29,168 GBP
Retailer 1£31,504 GBP
Retailer 2£39,864 GBP

46 data points across 4 retailers

12 retailers£29,168 GBP to £39,864 GBP

Retailer 1
-
£28,918 GBP
$38,510 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
£29,168 GBP
$38,843 USD
View
B+
Retailer 3
-
£30,876 GBP
$41,117 USD
View
B+
Retailer 4
-
£30,967 GBP
$41,238 USD
View
B+
Retailer 5
-
£31,504 GBP
₹3,995,503 INR
View
B
Retailer 6
-
£31,655 GBP
CA$58,548 CAD
View
B
Retailer 7
-
£35,159 GBP
$46,820 USD
View
B
Retailer 8
-
£35,159 GBP
$46,820 USD
View
B
Retailer 9
-
£36,330 GBP
$48,380 USD
View
B
Retailer 10
-
£39,596 GBP
$52,729 USD
View
B
Retailer 11
-
£39,864 GBP
€50,558 EUR
View
Most Expensive
Diamond Quarter
2.5SI1E2103A4A3N · Oct 29
£52,889 GBP
View
Price under review
11 more retailers have this diamond
Prices start from £29,168 GBPSave up to £10,695 GBP

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+
2.50ct Round
£29,168 GBP