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Cushion|Natural|GIA

0.40ct F SI2 Cushion Natural Diamond

GD • F/SI2 • GIA 1508431975

Certificate GIA 1508431975

Diamond specifications and retailer prices

From £231 GBP
$310 USD
As of November 1, 2026
Save £283 GBP (55%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £514 GBP at MOH London · As of November 1, 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1508431975. Listed at 9 retailers as of November 1, 2026, with prices from £231 to £514, a £283 spread on the same certified stone. MOH London lists it at £514. 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
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1508431975
Dimensions4.67 × 4.06 × 2.84 mm
L/W Ratio1.15
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal
Top View
4.67 mm4.06 mm0.40 ctF / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1508431975
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.9%

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 1
Current: £514 GBP|Low: £231 GBP|High: £618 GBP|Avg: £364 GBP|-16.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6£231 GBP
Retailer 9£244 GBP
Retailer 2£254 GBP
Retailer 4£284 GBP
Retailer 5£305 GBP
Retailer 7£320 GBP
Retailer 8£350 GBP
Retailer 3£422 GBP
MOH London£514 GBP

32 data points across 9 retailers

9 retailers£231 GBP to £514 GBP

A
Cheapest Retailer
-
£231 GBP
$310 USD
A
Retailer 2
-
£244 GBP
$327 USD
View
A
Retailer 3
-
£254 GBP
$341 USD
View
B+
Retailer 4
-
£284 GBP
View
B+
Retailer 5
-
£305 GBP
View
B+
Retailer 6
-
£320 GBP
$429 USD
View
B+
Retailer 7
-
£350 GBP
$470 USD
View
B+
Retailer 8
-
£422 GBP
€539 EUR
View
Most Expensive
B
MOH London
7EE6A8A5F · Nov 1
£514 GBP
View
8 more retailers have this diamond
Prices start from £231 GBPSave up to £283 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
£231 GBP