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Radiant|Natural|GIA

0.50ct I SI1 Radiant Natural Diamond

ID • I/SI1 • GIA 6542392066

Certificate GIA 6542392066

Diamond specifications and retailer prices

From £337 GBP
$451 USD
As of November 2, 2026
Save £1,168 GBP (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,505 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.5ct natural radiant diamond

This 0.5ct natural radiant sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542392066. Listed at 12 retailers as of October 30, 2026, with prices from £337 to £1,505, a £1,168 spread on the same certified stone. NZ Jewellers lists it at £1,505. 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

0.50
Carat
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542392066
Dimensions5.40 × 3.98 × 2.74 mm
L/W Ratio1.36
Top View
5.40 mm3.98 mm0.50 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542392066
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.8%

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 2
Current: £1,505 GBP|Low: £306 GBP|High: £1,517 GBP|Avg: £693 GBP|-0.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 12£337 GBP
Retailer 6£359 GBP
Retailer 4£571 GBP
Retailer 11£578 GBP
Retailer 5£591 GBP
Retailer 8£619 GBP
Retailer 10£661 GBP
Retailer 2£705 GBP
Retailer 3£727 GBP
Retailer 9£740 GBP
Retailer 7£1,108 GBP
NZ Jewellers£1,505 GBP

34 data points across 12 retailers

12 retailers£337 GBP to £1,505 GBP

A
Cheapest Retailer
-
£337 GBP
$451 USD
Final sale: no returns
A
Retailer 2
-
£359 GBP
₹45,772 INR
View
B+
Retailer 3
-
£571 GBP
$765 USD
View
B+
Retailer 4
-
£578 GBP
$775 USD
View
B+
Retailer 5
-
£591 GBP
View
B
Retailer 6
-
£619 GBP
$830 USD
View
B+
Retailer 7
-
£661 GBP
$885 USD
View
B+
Retailer 8
-
£705 GBP
€900 EUR
View
Retailer 9
-
£727 GBP
A$1,499 AUD
View
Price last confirmed 29 days ago
B+
Retailer 10
-
£740 GBP
ZAR 16,027 ZAR
View
B
Retailer 11
-
£1,108 GBP
View
Most Expensive
B
NZ Jewellers
574144f7-0a18-44c2-9d7e-8348b534807f · Oct 30
£1,505 GBP
$2,016 USD
View
11 more retailers have this diamond
Prices start from £337 GBPSave up to £1,168 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
0.50ct Radiant
£337 GBP