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Cushion|Natural|GIA

0.40ct E SI1 Cushion Natural Diamond

GD • E/SI1 • GIA 2556278709

Certificate GIA 2556278709

Diamond specifications and retailer prices

From $844 AUD
As of November 4, 2026
Save $1,123 AUD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,967 AUD at MOH London · As of November 4, 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 E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2556278709. Listed at 14 retailers as of November 4, 2026, with prices from $844 to $1,967, a $1,123 spread on the same certified stone. MOH London lists it at $1,967. 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
E
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556278709
Dimensions4.97 × 3.80 × 2.62 mm
L/W Ratio1.31
Key to symbols
Cloud, Crystal, Feather
Top View
4.97 mm3.80 mm0.40 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556278709
Side View
Table 63.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 69.0%

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 4
Current: $1,967 AUD|Low: $803 AUD|High: $1,991 AUD|Avg: $1,209 AUD|+12.7%
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
November 6, 2026
Retailer 9$844 AUD
Retailer 3$940 AUD
Retailer 4$1,007 AUD
Retailer 7$1,023 AUD
Retailer 13$1,064 AUD
Retailer 12$1,103 AUD
Retailer 5$1,122 AUD
Retailer 10$1,150 AUD
Retailer 11$1,196 AUD
Retailer 6$1,284 AUD
Retailer 8$1,354 AUD
Retailer 2$1,716 AUD
MOH London$1,967 AUD

35 data points across 13 retailers

14 retailers$844 AUD to $1,967 AUD

Retailer 1
-
$779 AUD
Price last confirmed 28 days ago
A
Retailer 2
-
$844 AUD
View
Retailer 3
-
$940 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$1,007 AUD
View
B+
Retailer 5
-
$1,023 AUD
View
B
Retailer 6
-
$1,064 AUD
View
B
Retailer 7
-
$1,103 AUD
View
Retailer 8
-
$1,122 AUD
View
Price last confirmed 34 days ago
B
Retailer 9
-
$1,150 AUD
View
B
Retailer 10
-
$1,196 AUD
View
B
Retailer 11
-
$1,284 AUD
View
B
Retailer 12
-
$1,354 AUD
View
C
Retailer 13
-
$1,716 AUD
View
Most Expensive
B
MOH London
1BD99E0EB · Nov 4
$1,967 AUD
£1,064 GBP
View
13 more retailers have this diamond
Prices start from $844 AUDSave up to $1,123 AUD

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
$844 AUD