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Cushion|Natural|GIA

3.40ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6465156888

Certificate GIA 6465156888

Diamond specifications and retailer prices

From £23,761 GBP
As of November 5, 2026
Save £15,099 GBP (39%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £38,860 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 3.4ct natural cushion diamond

This 3.4ct natural cushion sits in the three to five 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 6465156888. Listed at 10 retailers as of November 4, 2026, with prices from £23,761 to £38,860, a £15,099 spread on the same certified stone. MOH London lists it at £38,860. 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

3.40
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6465156888
Dimensions8.79 × 7.94 × 5.51 mm
L/W Ratio1.11
Top View
8.79 mm7.94 mm3.40 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6465156888
Side View
Table 60.0%CrownGirdle: VTN-THKPavilionCulet: NoneDepth 69.3%

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 5
Current: £38,860 GBP|Low: £23,761 GBP|High: £49,239 GBP|Avg: £30,834 GBP|-20.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 5£23,761 GBP
Retailer 10£23,910 GBP
Retailer 7£24,995 GBP
Retailer 2£25,131 GBP
Retailer 3£25,402 GBP
Retailer 8£26,418 GBP
Retailer 9£29,466 GBP
Retailer 6£29,730 GBP
Retailer 4£30,101 GBP
MOH London£38,860 GBP

37 data points across 10 retailers

10 retailers£23,761 GBP to £38,860 GBP

A
Cheapest Retailer
-
£23,761 GBP
A
Retailer 2
-
£23,910 GBP
View
A
Retailer 3
-
£24,995 GBP
View
A
Retailer 4
-
£25,131 GBP
View
A
Retailer 5
-
£25,402 GBP
View
A
Retailer 6
-
£26,418 GBP
View
B+
Retailer 7
-
£29,466 GBP
View
B+
Retailer 8
-
£29,730 GBP
View
B+
Retailer 9
-
£30,101 GBP
View
Most Expensive
B+
MOH London
2AB4E77FF · Nov 4
£38,860 GBP
View
9 more retailers have this diamond
Prices start from £23,761 GBPSave up to £15,099 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
3.40ct Cushion
£23,761 GBP