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Heart|Natural|GIA

1.03ct H SI2 Heart Natural Diamond

ID • H/SI2 • GIA 7506856545

Certificate GIA 7506856545

Diamond specifications and retailer prices

From £841 GBP
As of November 6, 2026
Save £1,155 GBP (58%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,955 GBP at NZ Jewellers · As of September 21, 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 H 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 7506856545. Listed at 19 retailers as of November 2, 2026, with a 137% 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

1.03
Carat
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceMedium
Crown angle37.6°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 7506856545
Dimensions6.18 × 6.59 × 4.18 mm
L/W Ratio1.07
Cert comments
Additional twinning wisps, pinpoints and surface graining are not shown.
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
6.18 mm6.59 mm1.03 ctH / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 7506856545
Side View
Table 58.0%Crown 37.6°Girdle: STK-ETKPavilion 41.4°Culet: NDepth 63.4%

Caratlytics Score

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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 6
Current: £2,779 GBP|Low: £841 GBP|High: £2,955 GBP|Avg: £1,401 GBP|-5.9%
NZ Jewellers
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 10£841 GBP
Retailer 9£1,052 GBP
Retailer 13£1,056 GBP
Retailer 12£1,137 GBP
Retailer 11£1,139 GBP
Retailer 5£1,211 GBP
Retailer 6£1,258 GBP
Retailer 3£1,315 GBP
Retailer 4£1,378 GBP
Retailer 8£1,403 GBP
Retailer 2£1,547 GBP
Retailer 7£1,996 GBP
NZ Jewellers£2,779 GBP

43 data points across 13 retailers

19 retailers£841 GBP to £1,996 GBP

A
Cheapest Retailer
-
£841 GBP
B+
Retailer 2
-
£1,052 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,056 GBP
View
B+
Retailer 4
-
£1,137 GBP
View
Retailer 5
-
£1,139 GBP
View
Price last confirmed 18 days ago
Retailer 6
-
£1,139 GBP
View
Price last confirmed 22 days ago
Retailer 7
-
£1,192 GBP
View
Price last confirmed 22 days ago
Retailer 8
-
£1,211 GBP
View
Price last confirmed 50 days ago
Retailer 9
-
£1,211 GBP
View
Price last confirmed 48 days ago
A
Retailer 10
-
£1,258 GBP
View
Retailer 11
-
£1,315 GBP
View
Price last confirmed 17 days ago
Retailer 12
-
£1,378 GBP
View
Price last confirmed 42 days ago
Retailer 13
-
£1,398 GBP
View
Price last confirmed 49 days ago
Retailer 14
-
£1,403 GBP
View
Price last confirmed 20 days ago
B+
Retailer 15
-
£1,547 GBP
View
B
Retailer 16
-
£1,996 GBP
View
Retailer 17
-
£2,779 GBP
View
Price last confirmed 17 days ago
Retailer 18
-
£2,955 GBP
View
Price last confirmed 50 days ago
Most Expensive
NZ Jewellers
a3fcc4ab-f2bb-4c44-bcd2-b2f500e91348 · Sep 21
£2,955 GBP
$3,955 USD
View
Price last confirmed 47 days ago
18 more retailers have this diamond
Prices start from £841 GBPSave up to £1,155 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
£841 GBP