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Cushion|Natural|GIA

0.40ct D SI1 Cushion Natural Diamond

GD • D/SI1 • GIA 6552694049

Certificate GIA 6552694049

Diamond specifications and retailer prices

From £459 GBP
$615 USD
As of October 28, 2026
Save £582 GBP (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,041 GBP at MOH London · As of October 29, 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 D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6552694049. Listed at 14 retailers as of October 28, 2026, with prices from £459 to £1,041, a £582 spread on the same certified stone. MOH London lists it at £1,041. 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
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552694049
Dimensions5.34 × 3.68 × 2.52 mm
L/W Ratio1.45
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
5.34 mm3.68 mm0.40 ctD / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552694049
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.5%

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: Oct 28
Current: £1,041 GBP|Low: £426 GBP|High: £1,041 GBP|Avg: £608 GBP|+23.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 11£459 GBP
Retailer 3£494 GBP
Retailer 4£530 GBP
Retailer 7£543 GBP
Retailer 13£557 GBP
Retailer 12£575 GBP
Retailer 5£584 GBP
Retailer 6£601 GBP
Retailer 10£629 GBP
Retailer 2£677 GBP
Retailer 8£712 GBP
Retailer 9£910 GBP
MOH London£1,041 GBP

35 data points across 13 retailers

14 retailers£459 GBP to £1,041 GBP

Retailer 1
-
£381 GBP
SGD 690 SGD
Price last confirmed 22 days ago
B+
Retailer 2
-
£459 GBP
$615 USD
View
B+
Retailer 3
-
£494 GBP
$662 USD
View
B+
Retailer 4
-
£530 GBP
$710 USD
View
B
Retailer 5
-
£543 GBP
View
B
Retailer 6
-
£557 GBP
$747 USD
View
B
Retailer 7
-
£575 GBP
$771 USD
View
Retailer 8
-
£584 GBP
A$1,204 AUD
View
Price last confirmed 27 days ago
B
Retailer 9
-
£601 GBP
$805 USD
View
B
Retailer 10
-
£629 GBP
View
B
Retailer 11
-
£677 GBP
€864 EUR
View
B
Retailer 12
-
£712 GBP
ZAR 15,405 ZAR
View
C
Retailer 13
-
£910 GBP
View
Most Expensive
C
MOH London
84EDD928D · Oct 29
£1,041 GBP
View
13 more retailers have this diamond
Prices start from £459 GBPSave up to £582 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
£459 GBP