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Radiant|Natural|HRD

2.51ct G SI2 Radiant Natural Diamond

GD • G/SI2 • HRD 250000201319

Certificate HRD 250000201319

Diamond specifications and retailer prices

From £5,047 GBP
₹644,978 INR
As of November 1, 2026
Save £3,908 GBP (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £10,937 GBP at NZ Jewellers · As of September 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by HRD 250000201319. Listed at 14 retailers as of November 1, 2026, with a 77% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
G
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 250000201319
Dimensions8.69 × 6.83 × 4.80 mm
L/W Ratio1.27
Girdle conditionPolished
Culet sizeNone
Top View
8.69 mm6.83 mm2.51 ctG / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 250000201319
Side View
Table 69.0%CrownGirdle: ThickPavilionCulet: NoneDepth 70.3%

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: £5,047 GBP|Low: £5,035 GBP|High: £9,224 GBP|Avg: £6,299 GBP|-2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 1£5,047 GBP
Retailer 10£5,567 GBP
Retailer 8£5,812 GBP
Retailer 6£5,822 GBP
Retailer 9£5,930 GBP
Retailer 2£6,000 GBP
Retailer 11£6,036 GBP
Retailer 3£6,252 GBP
Retailer 7£6,564 GBP
Retailer 5£7,022 GBP
Retailer 4£8,955 GBP

43 data points across 11 retailers

14 retailers£5,047 GBP to £8,955 GBP

A
Cheapest Retailer
-
£5,047 GBP
₹644,978 INR
A
Retailer 2
-
£5,567 GBP
$7,471 USD
View
A
Retailer 3
-
£5,812 GBP
$7,800 USD
View
A
Retailer 4
-
£5,822 GBP
SGD 10,558 SGD
View
A
Retailer 5
-
£5,930 GBP
$7,958 USD
View
Final sale: no returns
A
Retailer 6
-
£6,000 GBP
$8,051 USD
View
A
Retailer 7
-
£6,252 GBP
A$12,908 AUD
View
Retailer 8
-
£6,539 GBP
$8,775 USD
View
Price last confirmed 32 days ago
A
Retailer 9
-
£6,564 GBP
$8,809 USD
View
Retailer 10
-
£6,640 GBP
$8,911 USD
View
Price last confirmed 32 days ago
A
Retailer 11
-
£7,022 GBP
€8,974 EUR
View
Retailer 12
-
£7,546 GBP
$10,126 USD
View
Price last confirmed 34 days ago
A
Retailer 13
-
£8,955 GBP
View
Most Expensive
NZ Jewellers
9a20507a-02e0-4bd1-a33e-401e4d9fd625 · Sep 30
£10,937 GBP
$14,677 USD
View
Price last confirmed 33 days ago
13 more retailers have this diamond
Prices start from £5,047 GBPSave up to £3,908 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
£5,047 GBP