Round|Natural|GIA

0.50ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 5496515083

Certificate GIA 5496515083

Diamond specifications and retailer prices

From £246 GBP
As of November 6, 2026
Save £534 GBP (68%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,297 GBP at NZ Jewellers · As of October 20, 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 5496515083. Listed at 18 retailers as of November 4, 2026, with a 217% 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
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5496515083
Dimensions5.08 × 5.04 × 3.14 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.08 mm5.04 mm0.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5496515083
Side View
Table 58.0%Crown 36°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 62.1%

Caratlytics Score

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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: Nov 6
Current: £1,297 GBP|Low: £246 GBP|High: £1,297 GBP|Avg: £577 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2£246 GBP
Retailer 9£312 GBP
Retailer 10£320 GBP
Retailer 4£415 GBP
Retailer 5£434 GBP
Retailer 3£484 GBP
Retailer 6£780 GBP
Retailer 8£901 GBP
Retailer 7£940 GBP
NZ Jewellers£1,297 GBP

41 data points across 10 retailers

18 retailers£246 GBP to £780 GBP

A
Cheapest Retailer
-
£246 GBP
Retailer 2
-
£285 GBP
View
Price last confirmed 63 days ago
A
Retailer 3
-
£312 GBP
View
Final sale: no returns
A
Retailer 4
-
£320 GBP
View
Retailer 5
-
£338 GBP
View
Price last confirmed 44 days ago
Retailer 6
-
£353 GBP
View
Price last confirmed 16 days ago
Retailer 7
-
£364 GBP
View
Price last confirmed 21 days ago
Retailer 8
-
£390 GBP
View
Price last confirmed 68 days ago
Retailer 9
-
£390 GBP
View
Price last confirmed 45 days ago
B+
Retailer 10
-
£415 GBP
View
B+
Retailer 11
-
£434 GBP
View
B+
Retailer 12
-
£435 GBP
View
B+
Retailer 13
-
£484 GBP
View
B
Retailer 14
-
£780 GBP
View
Retailer 15
-
£901 GBP
View
Price last confirmed 16 days ago
Retailer 16
-
£940 GBP
View
Price last confirmed 15 days ago
Retailer 17
-
£1,297 GBP
View
Price last confirmed 43 days ago
Most Expensive
NZ Jewellers
5f09179c-a80b-4874-b199-7b70a7093f10 · Oct 20
£1,297 GBP
$1,745 USD
View
Price last confirmed 17 days ago
17 more retailers have this diamond
Prices start from £246 GBPSave up to £534 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
£246 GBP