CaratHunter
Plans
Cushion|Natural|GIA

0.40ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6555183033

Certificate GIA 6555183033

Diamond specifications and retailer prices

From $428 CAD
₹28,998 INR
As of October 29, 2026
Save $939 CAD (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,367 CAD at MOH London · As of October 26, 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 I 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 6555183033. Listed at 10 retailers as of October 26, 2026, with prices from $428 to $1,367, a $939 spread on the same certified stone. MOH London lists it at $1,367. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6555183033
Dimensions4.14 × 4.12 × 2.84 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
4.14 mm4.12 mm0.40 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6555183033
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: 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: Oct 29
Current: $1,367 CAD|Low: $425 CAD|High: $1,383 CAD|Avg: $851 CAD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 2$428 CAD
Retailer 6$636 CAD
Retailer 4$728 CAD
Retailer 8$787 CAD
Retailer 3$900 CAD
Retailer 5$915 CAD
Retailer 7$947 CAD
MOH London$1,367 CAD

37 data points across 8 retailers

10 retailers$428 CAD to $1,367 CAD

A
Cheapest Retailer
-
$428 CAD
₹28,998 INR
B+
Retailer 2
-
$636 CAD
$453 USD
View
B+
Retailer 3
-
$681 CAD
$485 USD
View
B+
Retailer 4
-
$683 CAD
$486 USD
View
B+
Retailer 5
-
$728 CAD
£408 GBP
View
B
Retailer 6
-
$787 CAD
$560 USD
View
B
Retailer 7
-
$900 CAD
€610 EUR
View
B
Retailer 8
-
$915 CAD
ZAR 10,523 ZAR
View
B
Retailer 9
-
$947 CAD
A$1,037 AUD
View
Price last confirmed 25 days ago
Most Expensive
B
MOH London
6D4E087F6 · Oct 26
$1,367 CAD
£766 GBP
View
9 more retailers have this diamond
Prices start from $428 CADSave up to $939 CAD

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
$428 CAD