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Heart|Natural|GIA

1.20ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 5222429851

Certificate GIA 5222429851

Diamond specifications and retailer prices

From £2,610 GBP
As of November 5, 2026
Save £2,604 GBP (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £5,214 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5222429851. Listed at 11 retailers as of November 1, 2026, with prices from £2,610 to £5,214, a £2,604 spread on the same certified stone. MOH London lists it at £5,214. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5222429851
Dimensions6.41 × 7.56 × 4.14 mm
L/W Ratio1.18
Top View
6.41 mm7.56 mm1.20 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5222429851
Side View
Table 62.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 54.8%

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 5
Current: £5,214 GBP|Low: £2,367 GBP|High: £5,270 GBP|Avg: £3,327 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 4£2,610 GBP
Retailer 7£2,737 GBP
Retailer 9£2,785 GBP
Retailer 12£2,828 GBP
Retailer 11£2,959 GBP
Retailer 5£3,318 GBP
Retailer 6£3,422 GBP
Retailer 8£3,468 GBP
Retailer 3£3,607 GBP
Retailer 10£3,703 GBP
Retailer 2£3,996 GBP
MOH London£5,214 GBP

34 data points across 12 retailers

11 retailers£2,610 GBP to £5,214 GBP

B+
Cheapest Retailer
-
£2,610 GBP
B
Retailer 2
-
£2,737 GBP
View
Final sale: no returns
B
Retailer 3
-
£2,785 GBP
View
B
Retailer 4
-
£2,828 GBP
View
B
Retailer 5
-
£2,959 GBP
View
B
Retailer 6
-
£3,318 GBP
View
B
Retailer 7
-
£3,422 GBP
View
Retailer 8
-
£3,468 GBP
View
Price last confirmed 41 days ago
Retailer 9
-
£3,703 GBP
View
Price last confirmed 24 days ago
B
Retailer 10
-
£3,996 GBP
View
Most Expensive
B
MOH London
586FAAB78 · Nov 1
£5,214 GBP
View
10 more retailers have this diamond
Prices start from £2,610 GBPSave up to £2,604 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
£2,610 GBP