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Cushion|Natural|GIA

0.40ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 1565394507

Certificate GIA 1565394507

Diamond specifications and retailer prices

From $399 AUD
₹26,676 INR
As of November 2, 2026
Save $890 AUD (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,289 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1565394507. Listed at 12 retailers as of November 1, 2026, with prices from $399 to $1,289, a $890 spread on the same certified stone. MOH London lists it at $1,289. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.40
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1565394507
Dimensions4.13 × 4.10 × 2.86 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
4.13 mm4.10 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1565394507
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: 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 2
Current: $1,289 AUD|Low: $398 AUD|High: $1,304 AUD|Avg: $813 AUD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 2$399 AUD
Retailer 8$569 AUD
Retailer 9$601 AUD
Retailer 10$643 AUD
Retailer 4$729 AUD
Retailer 7$861 AUD
Retailer 6$865 AUD
Retailer 5$1,013 AUD
Retailer 3$1,129 AUD
MOH London$1,289 AUD

27 data points across 10 retailers

12 retailers$399 AUD to $1,289 AUD

A
Cheapest Retailer
-
$399 AUD
₹26,676 INR
B+
Retailer 2
-
$569 AUD
$400 USD
View
B+
Retailer 3
-
$601 AUD
$422 USD
View
B+
Retailer 4
-
$643 AUD
$452 USD
View
B+
Retailer 5
-
$729 AUD
£403 GBP
View
B
Retailer 6
-
$762 AUD
$535 USD
View
B
Retailer 7
-
$861 AUD
$605 USD
View
B
Retailer 8
-
$865 AUD
ZAR 9,816 ZAR
View
Retailer 9
-
$894 AUD
View
Price last confirmed 29 days ago
B
Retailer 10
-
$1,013 AUD
€678 EUR
View
B
Retailer 11
-
$1,129 AUD
£624 GBP
View
Most Expensive
B
MOH London
770D10AF9 · Nov 1
$1,289 AUD
£713 GBP
View
11 more retailers have this diamond
Prices start from $399 AUDSave up to $890 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
$399 AUD