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Cushion|Natural|GIA

0.40ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6552636084

Certificate GIA 6552636084

Diamond specifications and retailer prices

From $414 USD
As of October 29, 2026
Save $475 USD (53%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $889 USD at MOH London · As of November 2, 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 F 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 6552636084. Listed at 9 retailers as of October 29, 2026, with prices from $414 to $889, a $475 spread on the same certified stone. MOH London lists it at $889. 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
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6552636084
Dimensions5.02 × 4.03 × 2.64 mm
L/W Ratio1.25
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cavity
Top View
5.02 mm4.03 mm0.40 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6552636084
Side View
Table 66.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 65.6%

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: $889 USD|Low: $414 USD|High: $923 USD|Avg: $593 USD|-3.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 3, 2026
Retailer 6$414 USD
Retailer 7$444 USD
Retailer 8$445 USD
Retailer 2$502 USD
Retailer 3$527 USD
Retailer 5$596 USD
Retailer 9$629 USD
Retailer 4$701 USD
MOH London$889 USD

43 data points across 9 retailers

9 retailers$414 USD to $889 USD

A
Cheapest Retailer
-
$414 USD
A
Retailer 2
-
$444 USD
View
A
Retailer 3
-
$445 USD
View
A
Retailer 4
-
$502 USD
£395 GBP
View
A
Retailer 5
-
$527 USD
£415 GBP
View
B+
Retailer 6
-
$596 USD
ZAR 9,634 ZAR
View
Retailer 7
-
$629 USD
A$968 AUD
View
Price last confirmed 30 days ago
B+
Retailer 8
-
$701 USD
€668 EUR
View
Most Expensive
B
MOH London
BC35A9762 · Nov 2
$889 USD
£700 GBP
View
8 more retailers have this diamond
Prices start from $414 USDSave up to $475 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
$414 USD