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Round|Natural|GIA

1.02ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 5232588333

Certificate GIA 5232588333

Diamond specifications and retailer prices

From £1,601 GBP
As of November 5, 2026
Save £838 GBP (34%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,427 GBP at NZ Jewellers · As of September 27, 2026
View at NZ Jewellers

About this 1.02ct natural round diamond

This 1.02ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5232588333. Listed at 15 retailers as of November 5, 2026, with a 52% 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

1.02
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 5232588333
Dimensions6.42 × 6.40 × 4.03 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.42 mm6.40 mm1.02 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5232588333
Side View
Table 57.0%Crown 34.5°Girdle: Sli. ThickPavilion 41.6°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,439 GBP|Low: £1,476 GBP|High: £3,754 GBP|Avg: £2,117 GBP|+15.8%
Retailer 1
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 5£1,601 GBP
Retailer 12£1,623 GBP
Retailer 3£1,719 GBP
Retailer 7£1,750 GBP
Retailer 10£1,871 GBP
Retailer 9£1,978 GBP
Retailer 11£2,064 GBP
Retailer 4£2,095 GBP
Retailer 8£2,095 GBP
Retailer 13£2,162 GBP
Retailer 6£2,384 GBP
Retailer 1£2,439 GBP
Retailer 2£3,754 GBP

40 data points across 13 retailers

15 retailers£1,601 GBP to £2,439 GBP

B+
Cheapest Retailer
-
£1,601 GBP
B
Retailer 2
-
£1,750 GBP
View
B+
Retailer 3
-
£1,871 GBP
View
Retailer 4
-
£1,918 GBP
View
Price last confirmed 29 days ago
B
Retailer 5
-
£1,978 GBP
View
B
Retailer 6
-
£1,993 GBP
View
Retailer 7
-
£2,007 GBP
View
Price last confirmed 38 days ago
B
Retailer 8
-
£2,095 GBP
View
B
Retailer 9
-
£2,095 GBP
View
B
Retailer 10
-
£2,162 GBP
View
Retailer 11
-
£2,213 GBP
View
Price last confirmed 38 days ago
B
Retailer 12
-
£2,384 GBP
View
B
Retailer 13
-
£2,439 GBP
View
Retailer 14
-
£3,754 GBP
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
dbf218fb-fd3c-4d3c-8421-9a991e9c8be0 · Sep 27
£4,427 GBP
$5,958 USD
View
Price under review
14 more retailers have this diamond
Prices start from £1,601 GBPSave up to £838 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.

B+
1.02ct Round
£1,601 GBP