Cushion|Natural|GIA

0.40ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 5436293478

Certificate GIA 5436293478

Diamond specifications and retailer prices

From $499 USD
As of November 6, 2026
Save $862 USD (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,361 USD at MOH London · As of November 4, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5436293478. Listed at 15 retailers as of November 4, 2026, with prices from $499 to $1,361, a $862 spread on the same certified stone. MOH London lists it at $1,361. 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5436293478
Dimensions4.41 × 4.12 × 2.85 mm
L/W Ratio1.07
Top View
4.41 mm4.12 mm0.40 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5436293478
Side View
Table 56.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 69.2%

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 6
Current: $1,361 USD|Low: $570 USD|High: $1,379 USD|Avg: $822 USD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3$570 USD
Retailer 9$636 USD
Retailer 10$652 USD
Retailer 2$713 USD
Retailer 4$780 USD
Retailer 5$791 USD
Retailer 7$808 USD
Retailer 8$887 USD
Retailer 6$915 USD
MOH London$1,361 USD

43 data points across 10 retailers

15 retailers$499 USD to $1,361 USD

A
Cheapest Retailer
-
$499 USD
A
Retailer 2
-
$570 USD
View
B+
Retailer 3
-
$618 USD
View
Retailer 4
-
$636 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$681 USD
View
B+
Retailer 6
-
$713 USD
View
B+
Retailer 7
-
$721 USD
View
B+
Retailer 8
-
$780 USD
View
B+
Retailer 9
-
$791 USD
View
B+
Retailer 10
-
$808 USD
View
B
Retailer 11
-
$822 USD
View
B
Retailer 12
-
$846 USD
View
Retailer 13
-
$887 USD
View
Price last confirmed 33 days ago
B+
Retailer 14
-
$915 USD
View
Most Expensive
B
MOH London
D4368579A · Nov 4
$1,361 USD
£1,072 GBP
View
14 more retailers have this diamond
Prices start from $499 USDSave up to $862 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
$499 USD