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Radiant|Natural|IGI

1.51ct E SI2 Radiant Natural Diamond

VG • E/SI2 • IGI 811694675

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

Certificate IGI 811694675

Diamond specifications and retailer prices

From £2,279 GBP
As of November 6, 2026
Save £2,791 GBP (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,070 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 811694675. Listed at 13 retailers as of November 5, 2026, with prices from £2,279 to £5,070, a £2,791 spread on the same certified stone. NZ Jewellers lists it at £5,070. 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

1.51
Carat
E
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle34.1°
OriginNatural
Grading LabIGI
CertificateIGI 811694675
Dimensions7.96 × 5.61 × 3.84 mm
L/W Ratio1.42
Top View
7.96 mm5.61 mm1.51 ctE / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 811694675
Side View
Table 65.0%Crown 38.8°Girdle: STK-VTKPavilion 34.1°Culet: NoneDepth 68.4%

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: Nov 6
Current: £5,070 GBP|Low: £2,279 GBP|High: £5,257 GBP|Avg: £3,170 GBP|-3.6%
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
November 6, 2026
Retailer 6£2,279 GBP
Retailer 3£2,359 GBP
Retailer 12£2,643 GBP
Retailer 10£2,686 GBP
Retailer 7£2,727 GBP
Retailer 5£2,820 GBP
Retailer 11£2,910 GBP
Retailer 2£3,003 GBP
Retailer 8£3,019 GBP
Retailer 13£3,022 GBP
Retailer 9£3,358 GBP
Retailer 4£4,991 GBP
NZ Jewellers£5,070 GBP

9 data points across 13 retailers

13 retailers£2,279 GBP to £5,070 GBP

A
Cheapest Retailer
-
£2,279 GBP
A
Retailer 2
-
£2,359 GBP
View
A
Retailer 3
-
£2,643 GBP
View
A
Retailer 4
-
£2,686 GBP
View
Final sale: no returns
A
Retailer 5
-
£2,727 GBP
View
A
Retailer 6
-
£2,820 GBP
View
A
Retailer 7
-
£2,910 GBP
View
A
Retailer 8
-
£3,003 GBP
View
A
Retailer 9
-
£3,019 GBP
View
B+
Retailer 10
-
£3,022 GBP
View
A
Retailer 11
-
£3,358 GBP
View
B+
Retailer 12
-
£4,991 GBP
View
Most Expensive
B+
NZ Jewellers
c2d1c589-ee5e-4412-bfd5-927f3777534f · Nov 5
£5,070 GBP
$6,786 USD
View
12 more retailers have this diamond
Prices start from £2,279 GBPSave up to £2,791 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
1.51ct Radiant
£2,279 GBP