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Heart|Natural|GIA

1.40ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 1509473967

Certificate GIA 1509473967

Diamond specifications and retailer prices

From £2,734 GBP
As of November 6, 2026
Save £2,924 GBP (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,659 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.4ct natural heart diamond

This 1.4ct natural heart sits in the one-and-a-quarter to one-and-a-half 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 1509473967. Listed at 19 retailers as of November 4, 2026, with prices from £2,734 to £5,659, a £2,924 spread on the same certified stone. MOH London lists it at £5,659. 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

1.40
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.57°
Pavilion angle53.73°
OriginNatural
Grading LabGIA
CertificateGIA 1509473967
Dimensions6.48 × 6.01 × 4.18 mm
L/W Ratio1.08
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Needle, Feather, Cloud
Top View
6.48 mm6.01 mm1.40 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1509473967
Side View
Table 63.0%Crown 44.57°Girdle: THK-THKPavilion 53.73°Culet: NoneDepth 69.6%

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: £5,659 GBP|Low: £2,734 GBP|High: £5,742 GBP|Avg: £3,695 GBP|-1.2%
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 6, 2026
Retailer 11£2,734 GBP
Retailer 5£2,746 GBP
Retailer 2£3,107 GBP
Retailer 9£3,154 GBP
Retailer 3£3,287 GBP
Retailer 12£3,308 GBP
Retailer 7£3,508 GBP
Retailer 4£3,591 GBP
Retailer 10£3,723 GBP
Retailer 6£4,008 GBP
Retailer 8£4,346 GBP
MOH London£5,659 GBP

32 data points across 12 retailers

19 retailers£2,734 GBP to £5,659 GBP

A
Cheapest Retailer
-
£2,734 GBP
A
Retailer 2
-
£2,746 GBP
View
B+
Retailer 3
-
£3,107 GBP
View
B+
Retailer 4
-
£3,154 GBP
View
B+
Retailer 5
-
£3,287 GBP
View
Final sale: no returns
B+
Retailer 6
-
£3,308 GBP
View
B+
Retailer 7
-
£3,362 GBP
View
Retailer 8
-
£3,479 GBP
View
Price last confirmed 12 days ago
B+
Retailer 9
-
£3,508 GBP
View
Retailer 10
-
£3,562 GBP
View
Price last confirmed 9 days ago
Retailer 11
-
£3,591 GBP
View
Price last confirmed 29 days ago
B
Retailer 12
-
£3,661 GBP
View
B
Retailer 13
-
£3,674 GBP
View
B+
Retailer 14
-
£3,723 GBP
View
B+
Retailer 15
-
£4,008 GBP
View
B
Retailer 16
-
£4,346 GBP
View
B
Retailer 17
-
£5,193 GBP
View
B
Retailer 18
-
£5,338 GBP
View
Most Expensive
B
MOH London
FF834143C · Nov 4
£5,659 GBP
View
18 more retailers have this diamond
Prices start from £2,734 GBPSave up to £2,924 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
1.40ct Heart
£2,734 GBP