Heart|Natural|GIA

1.20ct F SI2 Heart Natural Diamond

ID • F/SI2 • GIA 6422

Certificate GIA 6422

Diamond specifications and retailer prices

From £2,202 GBP
As of November 4, 2026
Save £2,792 GBP (56%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £5,408 GBP at NZ Jewellers · As of October 3, 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. Listed at 27 retailers as of November 4, 2026, with a 127% 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
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6422
Dimensions6.47 × 7.25 × 4.07 mm
L/W Ratio1.12
Top View
6.47 mm7.25 mm1.20 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6422
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 56.2%

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 4
Current: £4,994 GBP|Low: £2,202 GBP|High: £5,408 GBP|Avg: £3,086 GBP|-7.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4£2,202 GBP
Retailer 7£2,226 GBP
Retailer 3£2,597 GBP
Retailer 2£2,697 GBP
Retailer 5£2,781 GBP
Retailer 8£2,812 GBP
Retailer 6£2,997 GBP
NZ Jewellers£4,994 GBP

20 data points across 8 retailers

27 retailers£2,202 GBP to £4,994 GBP

B+
Cheapest Retailer
-
£2,202 GBP
B+
Retailer 2
-
£2,226 GBP
View
B+
Retailer 3
-
£2,597 GBP
View
B+
Retailer 4
-
£2,697 GBP
View
B
Retailer 5
-
£2,781 GBP
View
Retailer 6
-
£2,812 GBP
View
Price last confirmed 36 days ago
Retailer 7
-
£2,812 GBP
View
Price last confirmed 39 days ago
Retailer 8
-
£2,812 GBP
View
Price last confirmed 29 days ago
Retailer 9
-
£2,812 GBP
View
Price last confirmed 25 days ago
Retailer 10
-
£2,812 GBP
View
Price last confirmed 33 days ago
Retailer 11
-
£2,812 GBP
View
Price last confirmed 27 days ago
Retailer 12
-
£2,812 GBP
View
Price last confirmed 30 days ago
Retailer 13
-
£2,920 GBP
View
Price last confirmed 36 days ago
B
Retailer 14
-
£2,997 GBP
View
Retailer 15
-
£3,245 GBP
View
Price last confirmed 61 days ago
Retailer 16
-
£3,245 GBP
View
Price last confirmed 56 days ago
Retailer 17
-
£3,245 GBP
View
Price last confirmed 35 days ago
Retailer 18
-
£3,245 GBP
View
Price last confirmed 38 days ago
Retailer 19
-
£3,245 GBP
View
Price last confirmed 30 days ago
Retailer 20
-
£3,245 GBP
View
Price last confirmed 28 days ago
Retailer 21
-
£3,245 GBP
View
Price last confirmed 38 days ago
B
Retailer 22
-
£4,994 GBP
View
Retailer 23
-
£5,408 GBP
View
Price last confirmed 38 days ago
Retailer 24
-
£5,408 GBP
View
Price last confirmed 31 days ago
Retailer 25
-
£5,408 GBP
View
Price last confirmed 28 days ago
Retailer 26
-
£5,408 GBP
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
0b6453ec-487b-4a56-8b4f-14b47b2d74d3 · Oct 3
£5,408 GBP
$7,238 USD
View
Price last confirmed 34 days ago
26 more retailers have this diamond
Prices start from £2,202 GBPSave up to £2,792 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
£2,202 GBP