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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 $358 SGD
₹26,676 INR
As of November 2, 2026
Save $800 SGD (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,158 SGD 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 $358 to $1,158, a $800 spread on the same certified stone. MOH London lists it at $1,158. 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: $1,158 SGD|Low: $357 SGD|High: $1,171 SGD|Avg: $730 SGD|-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$358 SGD
Retailer 8$511 SGD
Retailer 9$539 SGD
Retailer 10$578 SGD
Retailer 4$654 SGD
Retailer 7$773 SGD
Retailer 6$777 SGD
Retailer 5$910 SGD
Retailer 3$1,014 SGD
MOH London$1,158 SGD

27 data points across 10 retailers

12 retailers$358 SGD to $1,158 SGD

A
Cheapest Retailer
-
$358 SGD
₹26,676 INR
B+
Retailer 2
-
$511 SGD
$400 USD
View
B+
Retailer 3
-
$539 SGD
$422 USD
View
B+
Retailer 4
-
$578 SGD
$452 USD
View
B+
Retailer 5
-
$654 SGD
£403 GBP
View
B
Retailer 6
-
$684 SGD
$535 USD
View
B
Retailer 7
-
$773 SGD
$605 USD
View
B
Retailer 8
-
$777 SGD
ZAR 9,816 ZAR
View
Retailer 9
-
$802 SGD
A$966 AUD
View
Price last confirmed 29 days ago
B
Retailer 10
-
$910 SGD
€678 EUR
View
B
Retailer 11
-
$1,014 SGD
£624 GBP
View
Most Expensive
B
MOH London
770D10AF9 · Nov 1
$1,158 SGD
£713 GBP
View
11 more retailers have this diamond
Prices start from $358 SGDSave up to $800 SGD

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
$358 SGD