Radiant|Natural|GIA

4.23ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 6531257839

Certificate GIA 6531257839

Diamond specifications and retailer prices

From £42,836 GBP
HK$448,400 HKD
As of October 30, 2026
Save £12,093 GBP (22%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £61,077 GBP at Yorxs · As of October 23, 2026
View at Yorxs

About this 4.23ct natural radiant diamond

This 4.23ct natural radiant sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6531257839. Listed at 11 retailers as of October 30, 2026, with a 28% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.23
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6531257839
Dimensions10.47 × 8.60 × 5.35 mm
L/W Ratio1.22
Top View
10.47 mm8.60 mm4.23 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531257839
Side View
Table 67.0%CrownGirdle: ThickPavilionCulet: NoneDepth 62.2%

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: Oct 30
Current: £46,043 GBP|Low: £42,836 GBP|High: £61,077 GBP|Avg: £48,644 GBP|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Yorxs
October 30, 2026
Retailer 7£42,836 GBP
Retailer 3£45,937 GBP
Retailer 1£46,043 GBP
Retailer 8£46,416 GBP
Retailer 4£46,466 GBP
Retailer 5£51,112 GBP
Retailer 6£53,879 GBP
Retailer 2£54,928 GBP
Yorxs£61,077 GBP

30 data points across 9 retailers

11 retailers£42,836 GBP to £54,928 GBP

A
Cheapest Retailer
-
£42,836 GBP
HK$448,400 HKD
Retailer 2
-
£45,937 GBP
$61,551 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
£46,043 GBP
₹5,875,448 INR
View
A
Retailer 4
-
£46,416 GBP
$62,192 USD
View
A
Retailer 5
-
£48,308 GBP
A$99,580 AUD
View
Retailer 6
-
£49,423 GBP
$66,221 USD
View
Price last confirmed 102 days ago
Retailer 7
-
£51,112 GBP
$68,485 USD
View
Price last confirmed 8 days ago
Retailer 8
-
£53,690 GBP
$71,939 USD
View
Price last confirmed 8 days ago
Retailer 9
-
£53,879 GBP
View
Price last confirmed 8 days ago
A
Retailer 10
-
£54,928 GBP
View
Most Expensive
Yorxs
E7FD3D497 · Oct 23
£61,077 GBP
€77,940 EUR
View
Price last confirmed 7 days ago
10 more retailers have this diamond
Prices start from £42,836 GBPSave up to £12,093 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
4.23ct Radiant
£42,836 GBP