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Heart|Natural|GIA

1.02ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2546375879

Certificate GIA 2546375879

Diamond specifications and retailer prices

From £908 GBP
As of November 6, 2026
Save £1,118 GBP (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,139 GBP at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.02ct natural heart diamond

This 1.02ct natural heart sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546375879. Listed at 16 retailers as of November 4, 2026, with a 123% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.5°
OriginNatural
Grading LabGIA
CertificateGIA 2546375879
Dimensions6.10 × 7.06 × 4.11 mm
L/W Ratio1.16
Top View
6.10 mm7.06 mm1.02 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2546375879
Side View
Table 59.0%CrownGirdle: MED-VTKPavilion 40.5°Culet: NoneDepth 58.2%

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: £934 GBP|Low: £899 GBP|High: £2,170 GBP|Avg: £1,280 GBP|-6.5%
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 5£908 GBP
Retailer 1£934 GBP
Retailer 13£963 GBP
Retailer 2£1,006 GBP
Retailer 15£1,059 GBP
Retailer 4£1,091 GBP
Retailer 10£1,121 GBP
Retailer 6£1,140 GBP
Retailer 8£1,263 GBP
Retailer 9£1,272 GBP
Retailer 11£1,322 GBP
Retailer 12£1,405 GBP
Retailer 7£1,602 GBP
Retailer 3£1,835 GBP
Retailer 14£2,027 GBP

30 data points across 15 retailers

16 retailers£908 GBP to £2,027 GBP

A
Cheapest Retailer
-
£908 GBP
A
Retailer 2
-
£934 GBP
View
A
Retailer 3
-
£963 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,006 GBP
View
A
Retailer 5
-
£1,059 GBP
View
A
Retailer 6
-
£1,091 GBP
View
A
Retailer 7
-
£1,121 GBP
View
A
Retailer 8
-
£1,140 GBP
View
B+
Retailer 9
-
£1,263 GBP
View
B+
Retailer 10
-
£1,272 GBP
View
B+
Retailer 11
-
£1,322 GBP
View
B+
Retailer 12
-
£1,405 GBP
View
Retailer 13
-
£1,602 GBP
View
Price last confirmed 32 days ago
B+
Retailer 14
-
£1,835 GBP
View
B
Retailer 15
-
£2,027 GBP
View
Most Expensive
NZ Jewellers
ed203f2b-3b92-4628-a2f3-77e7ce7e766a · Sep 19
£3,139 GBP
$4,201 USD
View
Price last confirmed 48 days ago
15 more retailers have this diamond
Prices start from £908 GBPSave up to £1,118 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
1.02ct Heart
£908 GBP