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Radiant|Natural|HRD

2.51ct J SI2 Radiant Natural Diamond

ID • J/SI2 • HRD 250000292671

Certificate HRD 250000292671

Diamond specifications and retailer prices

From £3,659 GBP
₹466,931 INR
As of October 31, 2026
Save £3,264 GBP (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £7,848 GBP at NZ Jewellers · As of September 29, 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 HRD 250000292671. Listed at 13 retailers as of October 26, 2026, with a 89% 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

2.51
Carat
J
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 250000292671
Dimensions9.35 × 6.64 × 4.63 mm
L/W Ratio1.41
Girdle conditionPolished
Culet sizeNone
Top View
9.35 mm6.64 mm2.51 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 250000292671
Side View
Table 68.0%CrownGirdle: MediumPavilionCulet: NoneDepth 69.7%

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 31
Current: £3,659 GBP|Low: £3,622 GBP|High: £6,997 GBP|Avg: £4,652 GBP|+0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 1£3,659 GBP
Retailer 5£4,119 GBP
Retailer 7£4,139 GBP
Retailer 8£4,282 GBP
Retailer 6£4,331 GBP
Retailer 2£4,394 GBP
Retailer 10£4,693 GBP
Retailer 9£4,810 GBP
Retailer 3£5,127 GBP
Retailer 4£6,923 GBP

45 data points across 10 retailers

13 retailers£3,659 GBP to £6,923 GBP

A
Cheapest Retailer
-
£3,659 GBP
₹466,931 INR
A
Retailer 2
-
£4,119 GBP
SGD 7,458 SGD
View
A
Retailer 3
-
£4,139 GBP
$5,546 USD
View
A
Retailer 4
-
£4,282 GBP
$5,738 USD
View
A
Retailer 5
-
£4,331 GBP
$5,803 USD
View
Final sale: no returns
A
Retailer 6
-
£4,394 GBP
A$9,058 AUD
View
Retailer 7
-
£4,606 GBP
$6,171 USD
View
Price last confirmed 32 days ago
Retailer 8
-
£4,693 GBP
$6,288 USD
View
Price last confirmed 15 days ago
A
Retailer 9
-
£4,810 GBP
$6,445 USD
View
A
Retailer 10
-
£5,127 GBP
€6,543 EUR
View
Retailer 11
-
£5,415 GBP
$7,255 USD
View
Price last confirmed 32 days ago
A
Retailer 12
-
£6,923 GBP
View
Most Expensive
NZ Jewellers
20b7921d-e01f-45a1-889b-cd628d88f433 · Sep 29
£7,848 GBP
$10,516 USD
View
Price last confirmed 32 days ago
12 more retailers have this diamond
Prices start from £3,659 GBPSave up to £3,264 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
£3,659 GBP