CaratHunter
Plans
Heart|Natural|GIA

1.20ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 5553259583

Certificate GIA 5553259583

Diamond specifications and retailer prices

From £1,236 GBP
As of November 6, 2026
Save £2,190 GBP (64%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,426 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct 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 5553259583. Listed at 9 retailers as of November 5, 2026, with prices from £1,236 to £3,426, a £2,190 spread on the same certified stone. NZ Jewellers lists it at £3,426. 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

1.20
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553259583
Dimensions6.46 × 7.39 × 4.30 mm
L/W Ratio1.14
Girdle conditionSlightly Thick
Top View
6.46 mm7.39 mm1.20 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5553259583
Side View
Table 60.0%CrownGirdle: MediumPavilionCulet: NoneDepth 58.2%

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: £3,426 GBP|Low: £1,236 GBP|High: £3,689 GBP|Avg: £2,030 GBP|-7.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2£1,236 GBP
Retailer 7£1,313 GBP
Retailer 6£1,480 GBP
Retailer 9£1,626 GBP
Retailer 4£1,742 GBP
Retailer 5£1,780 GBP
Retailer 3£2,034 GBP
Retailer 8£2,863 GBP
NZ Jewellers£3,426 GBP

34 data points across 9 retailers

9 retailers£1,236 GBP to £3,426 GBP

A
Cheapest Retailer
-
£1,236 GBP
A
Retailer 2
-
£1,313 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,480 GBP
View
B+
Retailer 4
-
£1,626 GBP
View
B+
Retailer 5
-
£1,742 GBP
View
B+
Retailer 6
-
£1,780 GBP
View
B+
Retailer 7
-
£2,034 GBP
View
B
Retailer 8
-
£2,863 GBP
View
Most Expensive
B
NZ Jewellers
144bfd90-f8c1-4735-8d51-c7e3cabf9354 · Nov 5
£3,426 GBP
$4,586 USD
View
8 more retailers have this diamond
Prices start from £1,236 GBPSave up to £2,190 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
1.20ct Heart
£1,236 GBP