Radiant|Natural|GIA

0.50ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1438055204

Certificate GIA 1438055204

Diamond specifications and retailer prices

From £452 GBP
$605 USD
As of November 2, 2026
Save £538 GBP (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,693 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 1438055204. Listed at 11 retailers as of November 1, 2026, with a 119% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1438055204
Dimensions4.88 × 4.00 × 2.71 mm
L/W Ratio1.22
Culet sizeNone
Top View
4.88 mm4.00 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1438055204
Side View
Table 62.0%CrownGirdle: Extremely ThickPavilionCulet: 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: Nov 2
Current: £654 GBP|Low: £346 GBP|High: £1,001 GBP|Avg: £602 GBP|+6.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 5£452 GBP
Retailer 4£463 GBP
Retailer 6£490 GBP
Retailer 7£564 GBP
Retailer 1£654 GBP
Retailer 3£705 GBP
Retailer 2£990 GBP

44 data points across 7 retailers

11 retailers£452 GBP to £990 GBP

A
Cheapest Retailer
-
£452 GBP
$605 USD
Final sale: no returns
B+
Retailer 2
-
£490 GBP
$656 USD
View
B+
Retailer 3
-
£508 GBP
$681 USD
View
B+
Retailer 4
-
£564 GBP
$756 USD
View
B
Retailer 5
-
£627 GBP
$840 USD
View
B
Retailer 6
-
£627 GBP
$840 USD
View
B
Retailer 7
-
£642 GBP
$860 USD
View
B
Retailer 8
-
£654 GBP
View
B+
Retailer 9
-
£705 GBP
€900 EUR
View
B
Retailer 10
-
£990 GBP
View
Most Expensive
NZ Jewellers
f4e5554e-bcd5-42c3-9487-48149f22e6e9 · Oct 30
£1,693 GBP
$2,269 USD
View
Price under review
10 more retailers have this diamond
Prices start from £452 GBPSave up to £538 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
£452 GBP