Cushion|Natural|GIA

0.40ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2557428722

Certificate GIA 2557428722

Diamond specifications and retailer prices

From $234 USD
₹22,316 INR
As of November 1, 2026
Save $510 USD (69%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $744 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 2557428722. Listed at 16 retailers as of November 1, 2026, with prices from $234 to $744, a $510 spread on the same certified stone. MOH London lists it at $744. 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: $744 USD|Low: $234 USD|High: $800 USD|Avg: $460 USD|-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$234 USD
Retailer 6$282 USD
Retailer 12$300 USD
Retailer 5$347 USD
Retailer 4$349 USD
Retailer 13$400 USD
Retailer 14$410 USD
Retailer 9$415 USD
Retailer 7$427 USD
Retailer 15$440 USD
Retailer 3$453 USD
Retailer 11$500 USD
Retailer 10$604 USD
Retailer 8$652 USD
MOH London$744 USD

24 data points across 15 retailers

16 retailers$234 USD to $744 USD

A
Cheapest Retailer
-
$234 USD
₹22,316 INR
A
Retailer 2
-
$282 USD
HK$2,200 HKD
View
A
Retailer 3
-
$300 USD
View
A
Retailer 4
-
$347 USD
View
A
Retailer 5
-
$349 USD
SGD 472 SGD
View
A
Retailer 6
-
$400 USD
View
A
Retailer 7
-
$410 USD
View
A
Retailer 8
-
$415 USD
£327 GBP
View
Retailer 9
-
$427 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$440 USD
View
B+
Retailer 11
-
$453 USD
View
B+
Retailer 12
-
$500 USD
ZAR 8,071 ZAR
View
Retailer 13
-
$549 USD
A$845 AUD
View
Price last confirmed 28 days ago
B+
Retailer 14
-
$604 USD
€575 EUR
View
B
Retailer 15
-
$652 USD
£514 GBP
View
Most Expensive
B
MOH London
DBDC5FBD7 · Nov 1
$744 USD
£586 GBP
View
15 more retailers have this diamond
Prices start from $234 USDSave up to $510 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
$234 USD