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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 €209 EUR
₹22,309 INR
As of November 2, 2026
Save €455 EUR (69%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €664 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 €209 to €664, a €455 spread on the same certified stone. MOH London lists it at €664. 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
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 2
Current: €664 EUR|Low: €209 EUR|High: €713 EUR|Avg: €409 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 2, 2026
Retailer 2€209 EUR
Retailer 6€251 EUR
Retailer 12€267 EUR
Retailer 5€309 EUR
Retailer 4€311 EUR
Retailer 13€357 EUR
Retailer 14€366 EUR
Retailer 9€370 EUR
Retailer 7€381 EUR
Retailer 15€392 EUR
Retailer 3€404 EUR
Retailer 11€445 EUR
Retailer 10€538 EUR
Retailer 8€581 EUR
MOH London€664 EUR

24 data points across 15 retailers

16 retailers€209 EUR to €664 EUR

A
Cheapest Retailer
-
€209 EUR
₹22,309 INR
A
Retailer 2
-
€251 EUR
HK$2,200 HKD
View
A
Retailer 3
-
€267 EUR
$300 USD
View
A
Retailer 4
-
€309 EUR
$347 USD
View
A
Retailer 5
-
€311 EUR
SGD 472 SGD
View
A
Retailer 6
-
€357 EUR
$400 USD
View
B+
Retailer 7
-
€366 EUR
$410 USD
View
A
Retailer 8
-
€370 EUR
£327 GBP
View
Retailer 9
-
€381 EUR
$427 USD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
€392 EUR
$440 USD
View
B+
Retailer 11
-
€404 EUR
$453 USD
View
B+
Retailer 12
-
€445 EUR
ZAR 8,071 ZAR
View
Retailer 13
-
€490 EUR
A$845 AUD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
€538 EUR
View
B
Retailer 15
-
€581 EUR
£514 GBP
View
Most Expensive
B
MOH London
DBDC5FBD7 · Nov 1
€664 EUR
£586 GBP
View
15 more retailers have this diamond
Prices start from €209 EURSave up to €455 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
€209 EUR