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Cushion|Natural|GIA

0.40ct F SI1 Cushion Natural Diamond

VG • F/SI1 • GIA 5523856401

Certificate GIA 5523856401

Diamond specifications and retailer prices

From £421 GBP
$565 USD
As of November 1, 2026
Save £527 GBP (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £948 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 5523856401. Listed at 10 retailers as of November 1, 2026, with prices from £421 to £948, a £527 spread on the same certified stone. MOH London lists it at £948. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5523856401
Dimensions4.86 × 3.88 × 2.58 mm
L/W Ratio1.25
Top View
4.86 mm3.88 mm0.40 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5523856401
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £948 GBP|Low: £421 GBP|High: £960 GBP|Avg: £604 GBP|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7£421 GBP
Retailer 5£453 GBP
Retailer 10£469 GBP
Retailer 2£499 GBP
Retailer 8£507 GBP
Retailer 6£576 GBP
Retailer 3£624 GBP
Retailer 9£632 GBP
Retailer 4£652 GBP
MOH London£948 GBP

44 data points across 10 retailers

10 retailers£421 GBP to £948 GBP

B+
Cheapest Retailer
-
£421 GBP
$565 USD
B+
Retailer 2
-
£453 GBP
$608 USD
View
B+
Retailer 3
-
£499 GBP
View
B+
Retailer 4
-
£507 GBP
$680 USD
View
B
Retailer 5
-
£518 GBP
$696 USD
View
B+
Retailer 6
-
£576 GBP
View
B
Retailer 7
-
£624 GBP
€797 EUR
View
Retailer 8
-
£632 GBP
A$1,305 AUD
View
Price last confirmed 29 days ago
B
Retailer 9
-
£652 GBP
ZAR 14,133 ZAR
View
Most Expensive
B
MOH London
93B80485B · Nov 2
£948 GBP
View
9 more retailers have this diamond
Prices start from £421 GBPSave up to £527 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.

B+
0.40ct Cushion
£421 GBP