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Round|Natural|GIA

2.50ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5556450890

Certificate GIA 5556450890

Diamond specifications and retailer prices

From £7,161 GBP
$9,595 USD
As of October 25, 2026
Save £11,726 GBP (62%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £18,887 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 2.5ct natural round diamond

This 2.5ct natural round sits in the two to three carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5556450890. Listed at 19 retailers as of October 25, 2026, with prices from £7,161 to £18,887, a £11,726 spread on the same certified stone. MOH London lists it at £18,887. 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556450890
Dimensions8.56 × 8.63 × 5.47 mm
L/W Ratio1.01
Top View
8.56 mm8.63 mm2.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556450890
Side View
Table 55.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 63.6%

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 25
Current: £18,887 GBP|Low: £7,161 GBP|High: £19,142 GBP|Avg: £12,440 GBP|-1.1%
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
Retailer 18
Retailer 19
October 31, 2026
Retailer 19£7,161 GBP
Retailer 12£7,780 GBP
Retailer 10£10,637 GBP
Retailer 3£11,168 GBP
Retailer 15£11,277 GBP
Retailer 5£11,388 GBP
Retailer 6£11,528 GBP
Retailer 2£12,435 GBP
Retailer 14£12,587 GBP
Retailer 17£12,831 GBP
Retailer 18£13,031 GBP
Retailer 8£13,141 GBP
Retailer 4£13,583 GBP
Retailer 7£13,583 GBP
Retailer 16£13,882 GBP
Retailer 11£14,031 GBP
Retailer 9£14,122 GBP
Retailer 13£14,557 GBP
MOH London£18,887 GBP

24 data points across 19 retailers

19 retailers£7,161 GBP to £18,887 GBP

A
Cheapest Retailer
-
£7,161 GBP
$9,595 USD
A
Retailer 2
-
£7,780 GBP
$10,424 USD
View
B+
Retailer 3
-
£10,637 GBP
$14,252 USD
View
B+
Retailer 4
-
£11,168 GBP
$14,964 USD
View
B+
Retailer 5
-
£11,277 GBP
$15,110 USD
View
B+
Retailer 6
-
£11,388 GBP
CA$21,193 CAD
View
B+
Retailer 7
-
£11,528 GBP
$15,446 USD
View
Final sale: no returns
B+
Retailer 8
-
£12,435 GBP
View
B
Retailer 9
-
£12,587 GBP
$16,865 USD
View
B
Retailer 10
-
£12,831 GBP
$17,192 USD
View
B
Retailer 11
-
£13,031 GBP
$17,460 USD
View
B
Retailer 12
-
£13,141 GBP
$17,607 USD
View
B
Retailer 13
-
£13,583 GBP
$18,200 USD
View
B
Retailer 14
-
£13,583 GBP
$18,200 USD
View
B
Retailer 15
-
£13,882 GBP
View
B
Retailer 16
-
£14,031 GBP
$18,800 USD
View
B+
Retailer 17
-
£14,122 GBP
$18,922 USD
View
B
Retailer 18
-
£14,557 GBP
€18,576 EUR
View
Most Expensive
B
MOH London
18BC854D2 · Oct 29
£18,887 GBP
View
18 more retailers have this diamond
Prices start from £7,161 GBPSave up to £11,726 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.

A
2.50ct Round
£7,161 GBP