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0.45ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2566515261

Certificate GIA 2566515261

Diamond specifications and retailer prices

From £201 GBP
As of November 6, 2026
Save £856 GBP (81%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,057 GBP at NZ Jewellers · As of November 4, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566515261. Listed at 20 retailers as of November 4, 2026, with prices from £201 to £1,057, a £856 spread on the same certified stone. NZ Jewellers lists it at £1,057. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2566515261
Dimensions4.91 × 4.93 × 3.04 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Feather
Top View
4.91 mm4.93 mm0.45 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566515261
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.7%

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 6
Current: £1,057 GBP|Low: £201 GBP|High: £1,080 GBP|Avg: £408 GBP|-2.1%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 12£201 GBP
Retailer 4£238 GBP
Retailer 11£267 GBP
Retailer 19£276 GBP
Retailer 15£296 GBP
Retailer 10£304 GBP
Retailer 2£311 GBP
Retailer 18£354 GBP
Retailer 17£363 GBP
Retailer 7£371 GBP
Retailer 14£373 GBP
Retailer 5£397 GBP
Retailer 9£421 GBP
Retailer 3£429 GBP
Retailer 8£438 GBP
Retailer 16£460 GBP
Retailer 13£555 GBP
Retailer 6£635 GBP
NZ Jewellers£1,057 GBP

19 data points across 19 retailers

20 retailers£201 GBP to £1,057 GBP

A
Cheapest Retailer
-
£201 GBP
A
Retailer 2
-
£238 GBP
View
A
Retailer 3
-
£267 GBP
View
A
Retailer 4
-
£276 GBP
View
A
Retailer 5
-
£296 GBP
View
Retailer 6
-
£304 GBP
View
Price last confirmed 8 days ago
A
Retailer 7
-
£311 GBP
View
A
Retailer 8
-
£314 GBP
View
B+
Retailer 9
-
£354 GBP
View
B+
Retailer 10
-
£363 GBP
View
B+
Retailer 11
-
£371 GBP
View
B+
Retailer 12
-
£373 GBP
View
B+
Retailer 13
-
£397 GBP
View
B+
Retailer 14
-
£421 GBP
View
B+
Retailer 15
-
£429 GBP
View
B+
Retailer 16
-
£438 GBP
View
B+
Retailer 17
-
£460 GBP
View
B
Retailer 18
-
£555 GBP
View
B
Retailer 19
-
£635 GBP
View
Most Expensive
B
NZ Jewellers
0a2bfe8e-fc94-4022-b8e1-13fced6c462f · Nov 4
£1,057 GBP
$1,423 USD
View
19 more retailers have this diamond
Prices start from £201 GBPSave up to £856 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
£201 GBP