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Heart|Natural|GIA

1.20ct F SI2 Heart Natural Diamond

ID • F/SI2 • GIA 6555734831

Certificate GIA 6555734831

Diamond specifications and retailer prices

From £1,857 GBP
As of November 6, 2026
Save £1,661 GBP (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,209 GBP at NZ Jewellers · As of October 6, 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 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 6555734831. Listed at 12 retailers as of November 4, 2026, with a 89% 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

1.20
Carat
F
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555734831
Dimensions6.29 × 7.40 × 4.43 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.29 mm7.40 mm1.20 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555734831
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,980 GBP|Low: £1,703 GBP|High: £3,570 GBP|Avg: £2,313 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5£1,857 GBP
Retailer 1£1,980 GBP
Retailer 4£2,013 GBP
Retailer 2£2,131 GBP
Retailer 6£2,301 GBP
Retailer 7£2,395 GBP
Retailer 3£3,518 GBP

38 data points across 7 retailers

12 retailers£1,857 GBP to £3,518 GBP

B+
Cheapest Retailer
-
£1,857 GBP
Final sale: no returns
B+
Retailer 2
-
£1,980 GBP
View
Retailer 3
-
£2,013 GBP
View
Price last confirmed 30 days ago
Retailer 4
-
£2,013 GBP
View
Price last confirmed 12 days ago
Retailer 5
-
£2,013 GBP
View
Price last confirmed 29 days ago
Retailer 6
-
£2,091 GBP
View
Price last confirmed 36 days ago
B+
Retailer 7
-
£2,131 GBP
View
Retailer 8
-
£2,301 GBP
View
Price last confirmed 11 days ago
Retailer 9
-
£2,323 GBP
View
Price last confirmed 30 days ago
B
Retailer 10
-
£3,518 GBP
View
Retailer 11
-
£4,209 GBP
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
ec8f9bf3-c137-4353-90f9-e9804192ff54 · Oct 6
£4,209 GBP
$5,634 USD
View
Price last confirmed 31 days ago
11 more retailers have this diamond
Prices start from £1,857 GBPSave up to £1,661 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.

B+
1.20ct Heart
£1,857 GBP