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Radiant|Natural|IGI

2.51ct J SI2 Radiant Natural Diamond

VG • J/SI2 • IGI 720565063

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI 720565063

Diamond specifications and retailer prices

From £4,176 GBP
$5,595 USD
As of October 25, 2026
Save £3,885 GBP (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £8,060 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 very-good cut grade and certified by IGI 720565063. Listed at 10 retailers as of October 25, 2026, with prices from £4,176 to £8,060, a £3,885 spread on the same certified stone. NZ Jewellers lists it at £8,060. 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
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle39.9°
Pavilion angle39.6°
OriginNatural
Grading LabIGI
CertificateIGI 720565063
Dimensions9.20 × 6.85 × 4.81 mm
L/W Ratio1.34
Culet sizePointed
Top View
9.20 mm6.85 mm2.51 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateIGI 720565063
Side View
Table 69.0%Crown 39.9°Girdle: MediumPavilion 39.6°Culet: NoneDepth 70.2%

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 25
Current: £8,060 GBP|Low: £4,077 GBP|High: £8,060 GBP|Avg: £5,381 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
October 31, 2026
Retailer 7£4,176 GBP
Retailer 8£4,448 GBP
Retailer 5£4,779 GBP
Retailer 9£4,819 GBP
Retailer 10£4,819 GBP
Retailer 11£4,819 GBP
Retailer 4£5,090 GBP
Retailer 2£5,266 GBP
Retailer 3£5,408 GBP
Retailer 12£5,561 GBP
Retailer 6£7,138 GBP
NZ Jewellers£8,060 GBP

39 data points across 12 retailers

10 retailers£4,176 GBP to £8,060 GBP

A
Cheapest Retailer
-
£4,176 GBP
$5,595 USD
A
Retailer 2
-
£4,448 GBP
$5,960 USD
View
Final sale: no returns
A
Retailer 3
-
£4,779 GBP
View
B+
Retailer 4
-
£4,819 GBP
$6,457 USD
View
B+
Retailer 5
-
£4,819 GBP
$6,457 USD
View
B+
Retailer 6
-
£4,819 GBP
$6,457 USD
View
B+
Retailer 7
-
£5,266 GBP
€6,720 EUR
View
B+
Retailer 8
-
£5,561 GBP
$7,451 USD
View
B+
Retailer 9
-
£7,138 GBP
View
Most Expensive
B+
NZ Jewellers
464fcd17-f17d-4be6-ae15-ee88667d106c · Oct 30
£8,060 GBP
$10,800 USD
View
9 more retailers have this diamond
Prices start from £4,176 GBPSave up to £3,885 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
£4,176 GBP