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Cushion|Natural|GIA

0.40ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2557428722

Certificate GIA 2557428722

Diamond specifications and retailer prices

From €210 EUR
₹22,316 INR
As of November 1, 2026
Save €456 EUR (69%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €666 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 2557428722. Listed at 16 retailers as of November 1, 2026, with prices from €210 to €666, a €456 spread on the same certified stone. MOH London lists it at €666. 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
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557428722
Dimensions5.32 × 3.59 × 2.46 mm
L/W Ratio1.48
Top View
5.32 mm3.59 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557428722
Side View
Table 68.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 68.7%

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: €666 EUR|Low: €210 EUR|High: €716 EUR|Avg: €412 EUR|-7.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 2€210 EUR
Retailer 6€252 EUR
Retailer 12€269 EUR
Retailer 5€311 EUR
Retailer 4€313 EUR
Retailer 13€358 EUR
Retailer 14€367 EUR
Retailer 9€371 EUR
Retailer 7€382 EUR
Retailer 15€394 EUR
Retailer 3€405 EUR
Retailer 11€447 EUR
Retailer 10€540 EUR
Retailer 8€584 EUR
MOH London€666 EUR

24 data points across 15 retailers

16 retailers€210 EUR to €666 EUR

A
Cheapest Retailer
-
€210 EUR
₹22,316 INR
A
Retailer 2
-
€252 EUR
HK$2,200 HKD
View
A
Retailer 3
-
€269 EUR
$300 USD
View
A
Retailer 4
-
€311 EUR
$347 USD
View
A
Retailer 5
-
€313 EUR
SGD 472 SGD
View
A
Retailer 6
-
€358 EUR
$400 USD
View
A
Retailer 7
-
€367 EUR
$410 USD
View
A
Retailer 8
-
€371 EUR
£327 GBP
View
Retailer 9
-
€382 EUR
$427 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
€394 EUR
$440 USD
View
B+
Retailer 11
-
€405 EUR
$453 USD
View
B+
Retailer 12
-
€447 EUR
ZAR 8,071 ZAR
View
Retailer 13
-
€492 EUR
A$845 AUD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
€540 EUR
View
B
Retailer 15
-
€584 EUR
£514 GBP
View
Most Expensive
B
MOH London
DBDC5FBD7 · Nov 1
€666 EUR
£586 GBP
View
15 more retailers have this diamond
Prices start from €210 EURSave up to €456 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
€210 EUR