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Round|Natural|GIA

0.55ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6565751839

Certificate GIA 6565751839

Diamond specifications and retailer prices

From £288 GBP
As of November 3, 2026
Save £930 GBP (76%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,219 GBP at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 0.55ct natural round diamond

This 0.55ct natural round sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565751839. Listed at 18 retailers as of November 2, 2026, with prices from £288 to £1,219, a £930 spread on the same certified stone. NZ Jewellers lists it at £1,219. 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

0.55
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6565751839
Dimensions5.25 × 5.23 × 3.27 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
5.25 mm5.23 mm0.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565751839
Side View
Table 55.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NDepth 62.4%

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 3
Current: £1,219 GBP|Low: £270 GBP|High: £1,219 GBP|Avg: £505 GBP
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
November 6, 2026
Retailer 12£288 GBP
Retailer 9£331 GBP
Retailer 6£333 GBP
Retailer 3£358 GBP
Retailer 8£389 GBP
Retailer 14£415 GBP
Retailer 7£418 GBP
Retailer 17£449 GBP
Retailer 4£472 GBP
Retailer 11£502 GBP
Retailer 10£528 GBP
Retailer 16£528 GBP
Retailer 13£539 GBP
Retailer 5£548 GBP
Retailer 2£629 GBP
Retailer 15£897 GBP
NZ Jewellers£1,219 GBP

11 data points across 17 retailers

18 retailers£288 GBP to £1,219 GBP

A
Cheapest Retailer
-
£288 GBP
A
Retailer 2
-
£331 GBP
View
A
Retailer 3
-
£333 GBP
View
B+
Retailer 4
-
£358 GBP
View
Final sale: no returns
A
Retailer 5
-
£389 GBP
View
A
Retailer 6
-
£389 GBP
View
B+
Retailer 7
-
£415 GBP
View
B+
Retailer 8
-
£418 GBP
View
B+
Retailer 9
-
£449 GBP
View
B+
Retailer 10
-
£472 GBP
View
B+
Retailer 11
-
£502 GBP
View
B+
Retailer 12
-
£528 GBP
View
B+
Retailer 13
-
£528 GBP
View
B+
Retailer 14
-
£539 GBP
View
B+
Retailer 15
-
£548 GBP
View
B
Retailer 16
-
£629 GBP
View
B
Retailer 17
-
£897 GBP
View
Most Expensive
B
NZ Jewellers
7d26b6c3-1f9c-411c-aead-8c9a3750660c · Nov 2
£1,219 GBP
$1,640 USD
View
17 more retailers have this diamond
Prices start from £288 GBPSave up to £930 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
0.55ct Round
£288 GBP