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Heart|Natural|GIA

1.00ct I SI2 Heart Natural Diamond

ID • I/SI2 • GIA 5553588987

Certificate GIA 5553588987

Diamond specifications and retailer prices

From £1,017 GBP
As of November 6, 2026
Save £2,333 GBP (70%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,350 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded I 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 5553588987. Listed at 14 retailers as of November 5, 2026, with prices from £1,017 to £3,350, a £2,333 spread on the same certified stone. NZ Jewellers lists it at £3,350. 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

1.00
Carat
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553588987
Dimensions6.86 × 5.79 × 4.15 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather, Needle
Top View
6.86 mm5.79 mm1.00 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553588987
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 60.5%

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: £3,350 GBP|Low: £948 GBP|High: £3,350 GBP|Avg: £1,533 GBP|+0.9%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 8£1,017 GBP
Retailer 6£1,096 GBP
Retailer 5£1,138 GBP
Retailer 14£1,245 GBP
Retailer 16£1,245 GBP
Retailer 7£1,285 GBP
Retailer 15£1,301 GBP
Retailer 2£1,350 GBP
Retailer 9£1,372 GBP
Retailer 17£1,378 GBP
Retailer 13£1,436 GBP
Retailer 3£1,464 GBP
Retailer 18£1,464 GBP
Retailer 4£1,509 GBP
Retailer 10£1,530 GBP
Retailer 11£1,865 GBP
Retailer 12£2,406 GBP
NZ Jewellers£3,350 GBP

34 data points across 18 retailers

14 retailers£1,017 GBP to £3,350 GBP

A
Cheapest Retailer
-
£1,017 GBP
A
Retailer 2
-
£1,096 GBP
View
A
Retailer 3
-
£1,245 GBP
View
B+
Retailer 4
-
£1,285 GBP
View
B+
Retailer 5
-
£1,301 GBP
View
B+
Retailer 6
-
£1,350 GBP
View
B+
Retailer 7
-
£1,378 GBP
View
B+
Retailer 8
-
£1,436 GBP
View
B+
Retailer 9
-
£1,464 GBP
View
B+
Retailer 10
-
£1,464 GBP
View
B+
Retailer 11
-
£1,509 GBP
View
B+
Retailer 12
-
£1,865 GBP
View
B
Retailer 13
-
£2,406 GBP
View
Most Expensive
B
NZ Jewellers
d5307ce0-16e2-407b-9e7e-13e2ee616e02 · Nov 5
£3,350 GBP
$4,484 USD
View
13 more retailers have this diamond
Prices start from £1,017 GBPSave up to £2,333 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
1.00ct Heart
£1,017 GBP