Round|Natural|GIA

0.45ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 5476366359

Certificate GIA 5476366359

Diamond specifications and retailer prices

From £245 GBP
As of November 4, 2026
Save £802 GBP (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,067 GBP at NZ Jewellers · As of September 15, 2026
View at NZ Jewellers

About this 0.45ct natural round diamond

This 0.45ct natural round sits in the sub-half-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5476366359. Listed at 16 retailers as of November 4, 2026, with a 327% 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

0.45
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5476366359
Dimensions4.90 × 4.86 × 3.02 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
4.90 mm4.86 mm0.45 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5476366359
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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: Nov 4
Current: £1,048 GBP|Low: £245 GBP|High: £1,067 GBP|Avg: £416 GBP|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 7£245 GBP
Retailer 3£247 GBP
Retailer 11£267 GBP
Retailer 10£276 GBP
Retailer 9£280 GBP
Retailer 5£298 GBP
Retailer 4£334 GBP
Retailer 13£337 GBP
Retailer 2£350 GBP
Retailer 12£378 GBP
Retailer 6£497 GBP
Retailer 8£630 GBP
NZ Jewellers£1,048 GBP

40 data points across 13 retailers

16 retailers£245 GBP to £1,048 GBP

A
Cheapest Retailer
-
£245 GBP
A
Retailer 2
-
£247 GBP
View
Retailer 3
-
£252 GBP
View
Price last confirmed 51 days ago
Retailer 4
-
£267 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£276 GBP
View
A
Retailer 6
-
£280 GBP
View
B+
Retailer 7
-
£334 GBP
View
B+
Retailer 8
-
£337 GBP
View
Retailer 9
-
£340 GBP
View
Price last confirmed 53 days ago
B+
Retailer 10
-
£350 GBP
View
B+
Retailer 11
-
£378 GBP
View
B+
Retailer 12
-
£417 GBP
View
B+
Retailer 13
-
£497 GBP
View
B
Retailer 14
-
£630 GBP
View
B
Retailer 15
-
£1,048 GBP
View
Most Expensive
NZ Jewellers
002be952-fe62-4d83-9b94-e61d8dcc6a1b · Sep 15
£1,067 GBP
$1,436 USD
View
Price last confirmed 52 days ago
15 more retailers have this diamond
Prices start from £245 GBPSave up to £802 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
0.45ct Round
£245 GBP