Round|Natural|GIA

0.50ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2426873952

Certificate GIA 2426873952

Diamond specifications and retailer prices

From £230 GBP
As of November 6, 2026
Save £502 GBP (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,219 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.5ct natural round diamond

This 0.5ct natural round sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2426873952. Listed at 14 retailers as of November 4, 2026, with a 218% 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2426873952
Dimensions5.07 × 5.05 × 3.14 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
5.07 mm5.05 mm0.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2426873952
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.1%

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 6
Current: £230 GBP|Low: £230 GBP|High: £743 GBP|Avg: £415 GBP|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1£230 GBP
Retailer 6£303 GBP
Retailer 4£323 GBP
Retailer 7£343 GBP
Retailer 2£389 GBP
Retailer 3£509 GBP
Retailer 5£733 GBP

40 data points across 7 retailers

14 retailers£230 GBP to £733 GBP

A
Cheapest Retailer
-
£230 GBP
A
Retailer 2
-
£266 GBP
View
A
Retailer 3
-
£303 GBP
View
Retailer 4
-
£318 GBP
View
Price last confirmed 9 days ago
A
Retailer 5
-
£323 GBP
View
Retailer 6
-
£343 GBP
View
Price last confirmed 8 days ago
Retailer 7
-
£343 GBP
View
Price last confirmed 9 days ago
Retailer 8
-
£367 GBP
View
Price last confirmed 10 days ago
B+
Retailer 9
-
£389 GBP
View
B+
Retailer 10
-
£415 GBP
View
B+
Retailer 11
-
£421 GBP
View
B
Retailer 12
-
£509 GBP
View
B
Retailer 13
-
£733 GBP
View
Most Expensive
NZ Jewellers
8c068304-13f5-428f-8918-5f76b859a47b · Oct 30
£1,219 GBP
$1,641 USD
View
Price last confirmed 7 days ago
13 more retailers have this diamond
Prices start from £230 GBPSave up to £502 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 Round
£230 GBP