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Radiant|Natural|GIA

2.51ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 6525079061

Certificate GIA 6525079061

Diamond specifications and retailer prices

From £7,924 GBP
As of November 1, 2026
Save £5,319 GBP (40%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £13,244 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 2.51ct natural radiant diamond

This 2.51ct 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 6525079061. Listed at 7 retailers as of October 30, 2026, with prices from £7,924 to £13,244, a £5,319 spread on the same certified stone. NZ Jewellers lists it at £13,244. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.14°
Pavilion angle30.4°
OriginNatural
Grading LabGIA
CertificateGIA 6525079061
Dimensions9.45 × 6.85 × 4.33 mm
L/W Ratio1.38
Top View
9.45 mm6.85 mm2.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6525079061
Side View
Table 73.0%Crown 44.14°Girdle: MED-STKPavilion 30.4°Culet: NoneDepth 63.1%

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: Nov 1
Current: £13,244 GBP|Low: £7,858 GBP|High: £13,507 GBP|Avg: £10,482 GBP|-2.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 4£7,924 GBP
Retailer 3£9,395 GBP
Retailer 6£9,464 GBP
Retailer 5£9,502 GBP
Retailer 7£9,648 GBP
Retailer 2£12,410 GBP
NZ Jewellers£13,244 GBP

42 data points across 7 retailers

7 retailers£7,924 GBP to £13,244 GBP

A
Cheapest Retailer
-
£7,924 GBP
A
Retailer 2
-
£9,395 GBP
View
B+
Retailer 3
-
£9,464 GBP
$12,681 USD
View
A
Retailer 4
-
£9,502 GBP
$12,731 USD
View
B+
Retailer 5
-
£9,648 GBP
$12,927 USD
View
B+
Retailer 6
-
£12,410 GBP
View
Most Expensive
B
NZ Jewellers
dcf6cc72-ceb6-4851-b385-009087832132 · Oct 30
£13,244 GBP
$17,745 USD
View
6 more retailers have this diamond
Prices start from £7,924 GBPSave up to £5,319 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
2.51ct Radiant
£7,924 GBP