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Radiant|Natural|GIA

1.51ct E SI2 Radiant Natural Diamond

ID • E/SI2 • GIA 6233751025

Certificate GIA 6233751025

Diamond specifications and retailer prices

From £3,829 GBP
As of October 29, 2026
Save £2,928 GBP (43%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £6,758 GBP at NZ Jewellers · As of October 27, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6233751025. Listed at 6 retailers as of October 27, 2026, with prices from £3,829 to £6,758, a £2,928 spread on the same certified stone. NZ Jewellers lists it at £6,758. 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

1.51
Carat
E
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle44.54°
Pavilion angle31.45°
OriginNatural
Grading LabGIA
CertificateGIA 6233751025
Dimensions7.38 × 5.68 × 3.86 mm
L/W Ratio1.30
Top View
7.38 mm5.68 mm1.51 ctE / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6233751025
Side View
Table 67.0%Crown 44.54°Girdle: STK-THKPavilion 31.45°Culet: NoneDepth 67.9%

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 29
Current: £6,758 GBP|Low: £3,629 GBP|High: £6,860 GBP|Avg: £4,824 GBP|-1.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 8£3,629 GBP
Retailer 2£3,829 GBP
Retailer 5£4,040 GBP
Retailer 7£4,040 GBP
Retailer 6£4,130 GBP
Retailer 9£4,291 GBP
Retailer 3£4,521 GBP
Retailer 10£4,593 GBP
Retailer 11£6,063 GBP
Retailer 4£6,470 GBP
NZ Jewellers£6,758 GBP

28 data points across 11 retailers

6 retailers£3,829 GBP to £6,758 GBP

A
Cheapest Retailer
-
£3,829 GBP
A
Retailer 2
-
£4,040 GBP
$5,380 USD
View
A
Retailer 3
-
£4,040 GBP
$5,380 USD
View
A
Retailer 4
-
£4,130 GBP
$5,500 USD
View
B+
Retailer 5
-
£6,470 GBP
View
Most Expensive
B+
NZ Jewellers
00748c62-3f1a-4e06-8ebe-5455db0be285 · Oct 27
£6,758 GBP
$8,999 USD
View
5 more retailers have this diamond
Prices start from £3,829 GBPSave up to £2,928 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
£3,829 GBP