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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 $280 USD
₹26,685 INR
As of November 1, 2026
Save $625 USD (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $906 USD 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 $280 to $906, a $625 spread on the same certified stone. MOH London lists it at $906. 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
Color
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 1
Current: $906 USD|Low: $280 USD|High: $916 USD|Avg: $570 USD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$280 USD
Retailer 8$400 USD
Retailer 9$422 USD
Retailer 10$452 USD
Retailer 4$512 USD
Retailer 7$605 USD
Retailer 6$608 USD
Retailer 5$712 USD
Retailer 3$793 USD
MOH London$906 USD

27 data points across 10 retailers

12 retailers$280 USD to $906 USD

A
Cheapest Retailer
-
$280 USD
₹26,685 INR
B+
Retailer 2
-
$400 USD
View
B+
Retailer 3
-
$422 USD
View
B+
Retailer 4
-
$452 USD
View
B+
Retailer 5
-
$512 USD
£403 GBP
View
B
Retailer 6
-
$535 USD
View
B
Retailer 7
-
$605 USD
View
B
Retailer 8
-
$608 USD
ZAR 9,816 ZAR
View
Retailer 9
-
$628 USD
A$966 AUD
View
Price last confirmed 28 days ago
B
Retailer 10
-
$712 USD
€678 EUR
View
B
Retailer 11
-
$793 USD
£625 GBP
View
Most Expensive
B
MOH London
770D10AF9 · Nov 1
$906 USD
£713 GBP
View
11 more retailers have this diamond
Prices start from $280 USDSave up to $625 USD

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
$280 USD