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Cushion|Natural|GIA

0.40ct F SI1 Cushion Natural Diamond

VG • F/SI1 • GIA 6545088091

Certificate GIA 6545088091

Diamond specifications and retailer prices

From £286 GBP
₹36,549 INR
As of November 2, 2026
Save £623 GBP (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £909 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.4ct natural cushion diamond

This 0.4ct natural cushion sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6545088091. Listed at 12 retailers as of November 2, 2026, with prices from £286 to £909, a £623 spread on the same certified stone. MOH London lists it at £909. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.40
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545088091
Dimensions4.22 × 4.19 × 2.79 mm
L/W Ratio1.01
Top View
4.22 mm4.19 mm0.40 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6545088091
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.6%

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 2
Current: £909 GBP|Low: £285 GBP|High: £920 GBP|Avg: £536 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 3£286 GBP
Retailer 8£399 GBP
Retailer 9£423 GBP
Retailer 2£493 GBP
Retailer 7£539 GBP
Retailer 5£540 GBP
Retailer 4£588 GBP
Retailer 10£592 GBP
Retailer 6£610 GBP
MOH London£909 GBP

35 data points across 10 retailers

12 retailers£286 GBP to £909 GBP

A
Cheapest Retailer
-
£286 GBP
₹36,549 INR
B+
Retailer 2
-
£399 GBP
$535 USD
View
B+
Retailer 3
-
£423 GBP
$568 USD
View
B+
Retailer 4
-
£454 GBP
$609 USD
View
B+
Retailer 5
-
£485 GBP
$651 USD
View
B+
Retailer 6
-
£493 GBP
View
B
Retailer 7
-
£539 GBP
View
B
Retailer 8
-
£540 GBP
$725 USD
View
B
Retailer 9
-
£588 GBP
€751 EUR
View
Retailer 10
-
£592 GBP
A$1,221 AUD
View
Price last confirmed 29 days ago
B
Retailer 11
-
£610 GBP
ZAR 13,224 ZAR
View
Most Expensive
B
MOH London
56E53CBB9 · Nov 2
£909 GBP
View
11 more retailers have this diamond
Prices start from £286 GBPSave up to £623 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
0.40ct Cushion
£286 GBP