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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 €251 EUR
₹26,685 INR
As of November 1, 2026
Save €560 EUR (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €811 EUR 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 €251 to €811, a €560 spread on the same certified stone. MOH London lists it at €811. 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: €811 EUR|Low: €250 EUR|High: €820 EUR|Avg: €510 EUR|-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€251 EUR
Retailer 8€358 EUR
Retailer 9€378 EUR
Retailer 10€405 EUR
Retailer 4€458 EUR
Retailer 7€542 EUR
Retailer 6€544 EUR
Retailer 5€637 EUR
Retailer 3€710 EUR
MOH London€811 EUR

27 data points across 10 retailers

12 retailers€251 EUR to €811 EUR

A
Cheapest Retailer
-
€251 EUR
₹26,685 INR
B+
Retailer 2
-
€358 EUR
$400 USD
View
B+
Retailer 3
-
€378 EUR
$422 USD
View
B+
Retailer 4
-
€405 EUR
$452 USD
View
B+
Retailer 5
-
€458 EUR
£403 GBP
View
B
Retailer 6
-
€479 EUR
$535 USD
View
B
Retailer 7
-
€542 EUR
$605 USD
View
B
Retailer 8
-
€544 EUR
ZAR 9,816 ZAR
View
Retailer 9
-
€562 EUR
A$966 AUD
View
Price last confirmed 29 days ago
B
Retailer 10
-
€637 EUR
View
B
Retailer 11
-
€710 EUR
£625 GBP
View
Most Expensive
B
MOH London
770D10AF9 · Nov 1
€811 EUR
£713 GBP
View
11 more retailers have this diamond
Prices start from €251 EURSave up to €560 EUR

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
€251 EUR