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Cushion|Natural|GIA

0.40ct G SI1 Cushion Natural Diamond

GD • G/SI1 • GIA 1555403296

Certificate GIA 1555403296

Diamond specifications and retailer prices

From $636 AUD
SGD 604 SGD
As of October 27, 2026
Save $767 AUD (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,403 AUD at MOH London · As of November 1, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 1555403296. Listed at 13 retailers as of October 27, 2026, with prices from $636 to $1,403, a $767 spread on the same certified stone. MOH London lists it at $1,403. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555403296
Dimensions4.89 × 3.68 × 2.55 mm
L/W Ratio1.33
Culet sizeNone
Key to symbols
Cloud, Cavity
Top View
4.89 mm3.68 mm0.40 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555403296
Side View
Table 65.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 69.4%

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: Oct 27
Current: $1,403 AUD|Low: $655 AUD|High: $1,421 AUD|Avg: $955 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9$655 AUD
Retailer 5$698 AUD
Retailer 4$754 AUD
Retailer 7$833 AUD
Retailer 6$942 AUD
Retailer 8$974 AUD
Retailer 3$1,000 AUD
Retailer 2$1,230 AUD
MOH London$1,403 AUD

38 data points across 9 retailers

13 retailers$636 AUD to $1,403 AUD

A
Cheapest Retailer
-
$636 AUD
SGD 604 SGD
A
Retailer 2
-
$655 AUD
$460 USD
View
B+
Retailer 3
-
$698 AUD
$490 USD
View
B+
Retailer 4
-
$702 AUD
$493 USD
View
B+
Retailer 5
-
$754 AUD
£417 GBP
View
B+
Retailer 6
-
$794 AUD
$558 USD
View
B+
Retailer 7
-
$807 AUD
$567 USD
View
B+
Retailer 8
-
$833 AUD
£461 GBP
View
B+
Retailer 9
-
$942 AUD
ZAR 10,695 ZAR
View
Retailer 10
-
$974 AUD
View
Price last confirmed 29 days ago
B
Retailer 11
-
$1,000 AUD
€669 EUR
View
B
Retailer 12
-
$1,230 AUD
£680 GBP
View
Most Expensive
B
MOH London
7EBB8F365 · Nov 1
$1,403 AUD
£776 GBP
View
12 more retailers have this diamond
Prices start from $636 AUDSave up to $767 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
$636 AUD