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Heart|Natural|GIA

1.30ct I SI1 Heart Natural Diamond

ID • I/SI1 • GIA 6551291505

Certificate GIA 6551291505

Diamond specifications and retailer prices

From £1,963 GBP
As of November 6, 2026
Save £2,826 GBP (59%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,789 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.3ct natural heart diamond

This 1.3ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded I 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 6551291505. Listed at 18 retailers as of November 5, 2026, with prices from £1,963 to £4,789, a £2,826 spread on the same certified stone. NZ Jewellers lists it at £4,789. 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

1.30
Carat
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551291505
Dimensions7.59 × 6.42 × 4.42 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Feather, Crystal, Pinpoint
Top View
7.59 mm6.42 mm1.30 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551291505
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.3%

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: £4,789 GBP|Low: £1,897 GBP|High: £4,789 GBP|Avg: £2,849 GBP|+1.0%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 8£1,963 GBP
Retailer 9£2,137 GBP
Retailer 7£2,276 GBP
Retailer 17£2,490 GBP
Retailer 19£2,490 GBP
Retailer 11£2,510 GBP
Retailer 10£2,578 GBP
Retailer 18£2,586 GBP
Retailer 12£2,636 GBP
Retailer 2£2,666 GBP
Retailer 4£2,672 GBP
Retailer 13£2,739 GBP
Retailer 3£2,824 GBP
Retailer 5£2,824 GBP
Retailer 20£2,873 GBP
Retailer 6£2,921 GBP
Retailer 14£3,199 GBP
Retailer 15£3,355 GBP
Retailer 16£4,584 GBP
NZ Jewellers£4,789 GBP

35 data points across 20 retailers

18 retailers£1,963 GBP to £4,789 GBP

A
Cheapest Retailer
-
£1,963 GBP
A
Retailer 2
-
£2,137 GBP
View
B+
Retailer 3
-
£2,276 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,490 GBP
View
B+
Retailer 5
-
£2,578 GBP
View
B+
Retailer 6
-
£2,586 GBP
View
B+
Retailer 7
-
£2,666 GBP
View
B+
Retailer 8
-
£2,672 GBP
View
B+
Retailer 9
-
£2,739 GBP
View
B+
Retailer 10
-
£2,824 GBP
View
B+
Retailer 11
-
£2,824 GBP
View
Retailer 12
-
£2,846 GBP
View
Price last confirmed 29 days ago
B+
Retailer 13
-
£2,873 GBP
View
B
Retailer 14
-
£2,921 GBP
View
B+
Retailer 15
-
£3,199 GBP
View
B
Retailer 16
-
£3,355 GBP
View
B
Retailer 17
-
£4,584 GBP
View
Most Expensive
B
NZ Jewellers
37da4c9f-a3f6-417c-9436-265a43f6b7a6 · Nov 5
£4,789 GBP
$6,410 USD
View
17 more retailers have this diamond
Prices start from £1,963 GBPSave up to £2,826 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
1.30ct Heart
£1,963 GBP