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Radiant|Natural|GIA

2.50ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 5231463685

Certificate GIA 5231463685

Diamond specifications and retailer prices

From £6,134 GBP
A$12,645 AUD
As of October 30, 2026
Save £1,493 GBP (20%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £10,607 GBP at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 2.5ct natural radiant diamond

This 2.5ct natural radiant sits in the two to three carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231463685. Listed at 10 retailers as of October 30, 2026, with a relatively tight 24% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle48.95°
Pavilion angle30.91°
OriginNatural
Grading LabGIA
CertificateGIA 5231463685
Dimensions8.32 × 6.61 × 4.66 mm
L/W Ratio1.26
Top View
8.32 mm6.61 mm2.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5231463685
Side View
Table 67.0%Crown 48.95°Girdle: Very ThickPavilion 30.91°Culet: NoneDepth 70.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £10,607 GBP|Low: £6,109 GBP|High: £21,232 GBP|Avg: £9,698 GBP
NZ Jewellers
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 31, 2026
Retailer 14£6,109 GBP
Retailer 13£6,364 GBP
Retailer 3£6,784 GBP
Retailer 12£6,895 GBP
Retailer 9£6,954 GBP
Retailer 10£7,381 GBP
Retailer 16£7,381 GBP
Retailer 2£7,610 GBP
Retailer 5£7,627 GBP
Retailer 15£7,955 GBP
Retailer 4£8,378 GBP
Retailer 11£9,939 GBP
NZ Jewellers£10,607 GBP
Retailer 8£14,846 GBP
Retailer 6£18,415 GBP
Retailer 7£21,232 GBP

39 data points across 16 retailers

10 retailers£6,134 GBP to £7,627 GBP

A
Cheapest Retailer
-
£6,134 GBP
A$12,645 AUD
Retailer 2
-
£6,895 GBP
$9,238 USD
View
Price last confirmed 39 days ago
A
Retailer 3
-
£6,954 GBP
$9,318 USD
View
A
Retailer 4
-
£7,381 GBP
$9,890 USD
View
A
Retailer 5
-
£7,381 GBP
$9,890 USD
View
A
Retailer 6
-
£7,610 GBP
View
A
Retailer 7
-
£7,627 GBP
$10,220 USD
View
Retailer 8
-
£7,955 GBP
$10,659 USD
View
Price last confirmed 39 days ago
Retailer 9
-
£8,378 GBP
$11,225 USD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
baf57a66-88ef-4294-9f67-b6082239026d · Sep 21
£10,607 GBP
$14,212 USD
View
Price last confirmed 40 days ago
9 more retailers have this diamond
Prices start from £6,134 GBPSave up to £1,493 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 Radiant
£6,134 GBP