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Radiant|Natural|GIA

1.51ct E SI2 Radiant Natural Diamond

EX • E/SI2 • GIA 6555434666

Certificate GIA 6555434666

Diamond specifications and retailer prices

From £3,066 GBP
HK$31,900 HKD
As of October 29, 2026
Save £3,426 GBP (53%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £6,493 GBP at MOH London · As of October 29, 2026
View at MOH London

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 6555434666. Listed at 12 retailers as of October 29, 2026, with prices from £3,066 to £6,493, a £3,426 spread on the same certified stone. MOH London lists it at £6,493. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6555434666
Dimensions7.66 × 5.66 × 3.83 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.66 mm5.66 mm1.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6555434666
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.7%

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 29
Current: £6,493 GBP|Low: £3,066 GBP|High: £7,513 GBP|Avg: £4,412 GBP|-2.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 10£3,066 GBP
Retailer 8£3,306 GBP
Retailer 9£3,472 GBP
Retailer 7£3,607 GBP
Retailer 11£3,665 GBP
Retailer 3£3,686 GBP
Retailer 13£3,695 GBP
Retailer 2£3,873 GBP
Retailer 5£4,128 GBP
Retailer 6£4,749 GBP
Retailer 12£6,444 GBP
MOH London£6,493 GBP
Retailer 4£7,104 GBP

39 data points across 13 retailers

12 retailers£3,066 GBP to £6,493 GBP

A
Cheapest Retailer
-
£3,066 GBP
HK$31,900 HKD
A
Retailer 2
-
£3,306 GBP
$4,403 USD
View
A
Retailer 3
-
£3,472 GBP
$4,623 USD
View
A
Retailer 4
-
£3,607 GBP
$4,803 USD
View
A
Retailer 5
-
£3,665 GBP
$4,880 USD
View
Final sale: no returns
A
Retailer 6
-
£3,686 GBP
$4,909 USD
View
A
Retailer 7
-
£3,695 GBP
$4,920 USD
View
A
Retailer 8
-
£3,873 GBP
View
A
Retailer 9
-
£4,128 GBP
A$8,458 AUD
View
A
Retailer 10
-
£4,749 GBP
€6,023 EUR
View
B+
Retailer 11
-
£6,444 GBP
$8,581 USD
View
Most Expensive
B+
MOH London
C9FCA304D · Oct 29
£6,493 GBP
View
11 more retailers have this diamond
Prices start from £3,066 GBPSave up to £3,426 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
£3,066 GBP