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Heart|Natural|GIA

1.01ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2426187670

Certificate GIA 2426187670

Diamond specifications and retailer prices

From £944 GBP
As of November 6, 2026
Save £2,309 GBP (71%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,252 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.01ct natural heart diamond

This 1.01ct 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 2426187670. Listed at 18 retailers as of November 5, 2026, with prices from £944 to £3,252, a £2,309 spread on the same certified stone. NZ Jewellers lists it at £3,252. 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

1.01
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2426187670
Dimensions6.06 × 6.46 × 4.09 mm
L/W Ratio1.07
Top View
6.06 mm6.46 mm1.01 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2426187670
Side View
Table 58.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 63.3%

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: £2,324 GBP|Low: £907 GBP|High: £2,364 GBP|Avg: £1,507 GBP|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 4£944 GBP
Retailer 7£965 GBP
Retailer 9£1,230 GBP
Retailer 8£1,285 GBP
Retailer 2£1,395 GBP
Retailer 3£1,476 GBP
Retailer 6£1,627 GBP
Retailer 10£1,739 GBP
Retailer 5£1,810 GBP
Retailer 1£2,324 GBP

37 data points across 10 retailers

18 retailers£944 GBP to £3,252 GBP

A
Cheapest Retailer
-
£944 GBP
A
Retailer 2
-
£965 GBP
View
B+
Retailer 3
-
£1,224 GBP
View
B+
Retailer 4
-
£1,230 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,285 GBP
View
Retailer 6
-
£1,334 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£1,334 GBP
View
B+
Retailer 8
-
£1,340 GBP
View
B+
Retailer 9
-
£1,395 GBP
View
B
Retailer 10
-
£1,454 GBP
View
B
Retailer 11
-
£1,476 GBP
View
B
Retailer 12
-
£1,538 GBP
View
B+
Retailer 13
-
£1,627 GBP
View
Retailer 14
-
£1,739 GBP
View
Price last confirmed 33 days ago
B
Retailer 15
-
£1,810 GBP
View
B
Retailer 16
-
£2,324 GBP
View
B
Retailer 17
-
£2,952 GBP
View
Most Expensive
C
NZ Jewellers
5dcfe42a-ebad-4a1a-8c6f-ecc666908a7a · Nov 5
£3,252 GBP
$4,353 USD
View
17 more retailers have this diamond
Prices start from £944 GBPSave up to £2,309 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
1.01ct Heart
£944 GBP