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Cushion|Natural|GIA

3.11ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6545995049

Certificate GIA 6545995049

Diamond specifications and retailer prices

From £26,395 GBP
As of November 5, 2026
Save £17,123 GBP (39%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £43,518 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 3.11ct natural cushion diamond

This 3.11ct 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 6545995049. Listed at 10 retailers as of November 4, 2026, with prices from £26,395 to £43,518, a £17,123 spread on the same certified stone. MOH London lists it at £43,518. 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

3.11
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545995049
Dimensions9.22 × 7.40 × 5.12 mm
L/W Ratio1.25
Girdle conditionFaceted
Key to symbols
Crystal, Feather, Needle, Natural, Extra Facet
Top View
9.22 mm7.40 mm3.11 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545995049
Side View
Table 67.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 69.2%

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: £43,518 GBP|Low: £26,395 GBP|High: £44,160 GBP|Avg: £31,393 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6£26,395 GBP
Retailer 10£26,791 GBP
Retailer 2£27,325 GBP
Retailer 8£27,780 GBP
Retailer 4£28,155 GBP
Retailer 7£29,601 GBP
Retailer 5£32,561 GBP
Retailer 9£33,017 GBP
Retailer 3£33,028 GBP
MOH London£43,518 GBP

28 data points across 10 retailers

10 retailers£26,395 GBP to £43,518 GBP

A
Cheapest Retailer
-
£26,395 GBP
B+
Retailer 2
-
£26,791 GBP
View
B+
Retailer 3
-
£27,325 GBP
View
B+
Retailer 4
-
£27,780 GBP
View
B+
Retailer 5
-
£28,155 GBP
View
B+
Retailer 6
-
£29,601 GBP
View
B
Retailer 7
-
£32,561 GBP
View
B
Retailer 8
-
£33,017 GBP
View
B+
Retailer 9
-
£33,028 GBP
View
Most Expensive
B
MOH London
E6040FEFE · Nov 4
£43,518 GBP
View
9 more retailers have this diamond
Prices start from £26,395 GBPSave up to £17,123 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
3.11ct Cushion
£26,395 GBP