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Cushion|Natural|GIA

0.40ct G SI1 Cushion Natural Diamond

VG • G/SI1 • GIA 2557639663

Certificate GIA 2557639663

Diamond specifications and retailer prices

From $735 AUD
$515 USD
As of November 1, 2026
Save $912 AUD (55%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,647 AUD 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557639663. Listed at 14 retailers as of November 1, 2026, with prices from $735 to $1,647, a $912 spread on the same certified stone. MOH London lists it at $1,647. 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
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557639663
Dimensions4.90 × 3.77 × 2.63 mm
L/W Ratio1.30
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud
Top View
4.90 mm3.77 mm0.40 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557639663
Side View
Table 62.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 69.7%

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: $1,647 AUD|Low: $631 AUD|High: $1,665 AUD|Avg: $998 AUD|+20.6%
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 2, 2026
Retailer 12$735 AUD
Retailer 11$786 AUD
Retailer 4$842 AUD
Retailer 8$842 AUD
Retailer 6$897 AUD
Retailer 3$917 AUD
Retailer 5$937 AUD
Retailer 13$973 AUD
Retailer 10$1,000 AUD
Retailer 7$1,092 AUD
Retailer 9$1,132 AUD
Retailer 2$1,444 AUD
MOH London$1,647 AUD

35 data points across 13 retailers

14 retailers$735 AUD to $1,647 AUD

Retailer 1
-
$613 AUD
SGD 581 SGD
Price last confirmed 25 days ago
A
Retailer 2
-
$735 AUD
$515 USD
View
B+
Retailer 3
-
$786 AUD
$551 USD
View
B+
Retailer 4
-
$842 AUD
$590 USD
View
B+
Retailer 5
-
$842 AUD
$590 USD
View
B+
Retailer 6
-
$897 AUD
£495 GBP
View
B+
Retailer 7
-
$917 AUD
$643 USD
View
Retailer 8
-
$937 AUD
View
Price last confirmed 29 days ago
B
Retailer 9
-
$973 AUD
$682 USD
View
B
Retailer 10
-
$1,000 AUD
£552 GBP
View
B
Retailer 11
-
$1,092 AUD
€729 EUR
View
B
Retailer 12
-
$1,132 AUD
ZAR 12,815 ZAR
View
C
Retailer 13
-
$1,444 AUD
£797 GBP
View
Most Expensive
C
MOH London
97C107CE1 · Nov 2
$1,647 AUD
£909 GBP
View
13 more retailers have this diamond
Prices start from $735 AUDSave up to $912 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
$735 AUD