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Heart|Natural|GIA

1.02ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 5151454109

Certificate GIA 5151454109

Diamond specifications and retailer prices

From £1,863 GBP
As of November 5, 2026
Save £2,188 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,051 GBP at NZ Jewellers · As of November 5, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5151454109. Listed at 14 retailers as of November 5, 2026, with prices from £1,863 to £4,051, a £2,188 spread on the same certified stone. NZ Jewellers lists it at £4,051. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5151454109
Dimensions6.64 × 7.26 × 3.34 mm
L/W Ratio1.09
Top View
6.64 mm7.26 mm1.02 ctJ / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 5151454109
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 46.0%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,551 GBP|Low: £2,106 GBP|High: £3,934 GBP|Avg: £2,608 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5£2,106 GBP
Retailer 4£2,188 GBP
Retailer 6£2,270 GBP
Retailer 2£2,406 GBP
Retailer 1£2,551 GBP
Retailer 7£2,699 GBP
Retailer 3£3,878 GBP

44 data points across 7 retailers

14 retailers£1,863 GBP to £4,051 GBP

B
Cheapest Retailer
-
£1,863 GBP
B
Retailer 2
-
£1,886 GBP
View
B
Retailer 3
-
£2,106 GBP
View
Retailer 4
-
£2,106 GBP
View
Price last confirmed 8 days ago
B
Retailer 5
-
£2,150 GBP
View
B
Retailer 6
-
£2,188 GBP
View
B
Retailer 7
-
£2,270 GBP
View
B
Retailer 8
-
£2,286 GBP
View
B
Retailer 9
-
£2,406 GBP
View
B
Retailer 10
-
£2,430 GBP
View
B
Retailer 11
-
£2,551 GBP
View
Retailer 12
-
£2,699 GBP
View
Price last confirmed 14 days ago
B
Retailer 13
-
£3,878 GBP
View
Most Expensive
C
NZ Jewellers
3b2c707b-3a6a-46de-bee9-b6a6c4775601 · Nov 5
£4,051 GBP
$5,422 USD
View
13 more retailers have this diamond
Prices start from £1,863 GBPSave up to £2,188 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 Heart
£1,863 GBP