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Heart|Natural|GIA

1.03ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 6541531057

Certificate GIA 6541531057

Diamond specifications and retailer prices

From £1,267 GBP
As of November 2, 2026
Save £1,858 GBP (59%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,125 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.03ct natural heart diamond

This 1.03ct natural heart sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541531057. Listed at 6 retailers as of October 30, 2026, with prices from £1,267 to £3,125, a £1,858 spread on the same certified stone. NZ Jewellers lists it at £3,125. 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

1.03
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle38.17°
Pavilion angle42.89°
OriginNatural
Grading LabGIA
CertificateGIA 6541531057
Dimensions6.03 × 7.04 × 4.20 mm
L/W Ratio1.17
Top View
6.03 mm7.04 mm1.03 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6541531057
Side View
Table 62.0%Crown 38.17°Girdle: STK-THKPavilion 42.89°Culet: NoneDepth 59.7%

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 2
Current: £3,125 GBP|Low: £1,203 GBP|High: £3,125 GBP|Avg: £1,736 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 7£1,203 GBP
Retailer 2£1,267 GBP
Retailer 4£1,281 GBP
Retailer 6£1,340 GBP
Retailer 5£1,376 GBP
Retailer 8£1,565 GBP
Retailer 9£1,753 GBP
Retailer 3£2,245 GBP
NZ Jewellers£3,125 GBP

28 data points across 9 retailers

6 retailers£1,267 GBP to £3,125 GBP

A
Cheapest Retailer
-
£1,267 GBP
A
Retailer 2
-
£1,281 GBP
$1,719 USD
View
A
Retailer 3
-
£1,340 GBP
$1,798 USD
View
A
Retailer 4
-
£1,376 GBP
$1,847 USD
View
B+
Retailer 5
-
£2,245 GBP
View
Most Expensive
B
NZ Jewellers
ea271e85-02d0-421d-bd70-cd62fb49ac31 · Oct 30
£3,125 GBP
$4,193 USD
View
5 more retailers have this diamond
Prices start from £1,267 GBPSave up to £1,858 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
1.03ct Heart
£1,267 GBP