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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 $1,046 NZD
As of November 4, 2026
Save $1,391 NZD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,438 NZD 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 $1,046 to $2,438, a $1,391 spread on the same certified stone. MOH London lists it at $2,438. 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: $2,438 NZD|Low: $996 NZD|High: $2,467 NZD|Avg: $1,499 NZD|+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$1,046 NZD
Retailer 3$1,165 NZD
Retailer 4$1,248 NZD
Retailer 7$1,268 NZD
Retailer 13$1,319 NZD
Retailer 12$1,367 NZD
Retailer 5$1,391 NZD
Retailer 10$1,425 NZD
Retailer 11$1,483 NZD
Retailer 6$1,591 NZD
Retailer 8$1,678 NZD
Retailer 2$2,127 NZD
MOH London$2,438 NZD

35 data points across 13 retailers

14 retailers$1,046 NZD to $2,438 NZD

Retailer 1
-
$965 NZD
Price last confirmed 29 days ago
A
Retailer 2
-
$1,046 NZD
View
Retailer 3
-
$1,165 NZD
View
Price last confirmed 9 days ago
B+
Retailer 4
-
$1,248 NZD
View
B+
Retailer 5
-
$1,268 NZD
View
B
Retailer 6
-
$1,319 NZD
View
B
Retailer 7
-
$1,367 NZD
View
Retailer 8
-
$1,391 NZD
View
Price last confirmed 35 days ago
B
Retailer 9
-
$1,425 NZD
View
B
Retailer 10
-
$1,483 NZD
View
B
Retailer 11
-
$1,591 NZD
View
B
Retailer 12
-
$1,678 NZD
View
C
Retailer 13
-
$2,127 NZD
View
Most Expensive
B
MOH London
1BD99E0EB · Nov 4
$2,438 NZD
£1,064 GBP
View
13 more retailers have this diamond
Prices start from $1,046 NZDSave up to $1,391 NZD

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
$1,046 NZD