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Round|Natural|GIA

2.50ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2556771555

Certificate GIA 2556771555

Diamond specifications and retailer prices

From £11,275 GBP
$15,107 USD
As of October 30, 2026
Save £3,497 GBP (24%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £17,444 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556771555. Listed at 13 retailers as of October 26, 2026, with a 31% 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2556771555
Dimensions8.59 × 8.65 × 5.38 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
8.59 mm8.65 mm2.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556771555
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

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 30
Current: £14,414 GBP|Low: £10,861 GBP|High: £19,462 GBP|Avg: £13,433 GBP|+4.2%
Retailer 1
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
October 30, 2026
Retailer 2£11,275 GBP
Retailer 12£11,320 GBP
Retailer 4£11,546 GBP
Retailer 7£11,553 GBP
Retailer 10£11,947 GBP
Retailer 3£12,836 GBP
Retailer 6£13,152 GBP
Retailer 14£13,740 GBP
Retailer 15£13,740 GBP
Retailer 9£13,746 GBP
Retailer 16£14,195 GBP
Retailer 8£14,318 GBP
Retailer 1£14,414 GBP
Retailer 5£14,515 GBP
Retailer 13£14,771 GBP
Retailer 11£19,462 GBP

41 data points across 16 retailers

13 retailers£11,275 GBP to £14,771 GBP

B+
Cheapest Retailer
-
£11,275 GBP
$15,107 USD
B+
Retailer 2
-
£11,546 GBP
CA$21,486 CAD
View
B+
Retailer 3
-
£11,553 GBP
$15,479 USD
View
B+
Retailer 4
-
£11,947 GBP
$16,008 USD
View
Final sale: no returns
B
Retailer 5
-
£12,836 GBP
$17,199 USD
View
Retailer 6
-
£13,339 GBP
$17,873 USD
View
Price last confirmed 31 days ago
B
Retailer 7
-
£13,746 GBP
View
Retailer 8
-
£13,853 GBP
$18,561 USD
View
Price last confirmed 32 days ago
B
Retailer 9
-
£14,318 GBP
$19,184 USD
View
B
Retailer 10
-
£14,414 GBP
€18,394 EUR
View
B
Retailer 11
-
£14,515 GBP
$19,448 USD
View
B
Retailer 12
-
£14,771 GBP
$19,792 USD
View
Most Expensive
NZ Jewellers
afae2bce-18e8-4498-9f36-c5b35f3e6e57 · Sep 28
£17,444 GBP
$23,373 USD
View
Price last confirmed 32 days ago
12 more retailers have this diamond
Prices start from £11,275 GBPSave up to £3,497 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
£11,275 GBP