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Marquise|Natural|GIA

0.40ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6555590918

Certificate GIA 6555590918

Diamond specifications and retailer prices

From $383 CAD
₹26,115 INR
As of November 1, 2026
Save $841 CAD (69%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,224 CAD at MOH London · As of November 1, 2026
View at MOH London

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-carat band, graded H 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 6555590918. Listed at 8 retailers as of November 1, 2026, with prices from $383 to $1,224, a $841 spread on the same certified stone. MOH London lists it at $1,224. 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
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555590918
Dimensions7.08 × 3.81 × 2.41 mm
L/W Ratio1.86
Girdle conditionThin to Extremely Thick
Key to symbols
Crystal, Feather
Top View
7.08 mm3.81 mm0.40 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555590918
Side View
Table 58.0%CrownGirdle: THN-XTKPavilionCulet: NoneDepth 63.3%

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: $1,224 CAD|Low: $382 CAD|High: $1,426 CAD|Avg: $760 CAD|-14.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 2$383 CAD
Retailer 4$447 CAD
Retailer 5$561 CAD
Retailer 3$930 CAD
MOH London$1,224 CAD

45 data points across 5 retailers

8 retailers$383 CAD to $1,224 CAD

A
Cheapest Retailer
-
$383 CAD
₹26,115 INR
A
Retailer 2
-
$447 CAD
HK$2,500 HKD
View
Retailer 3
-
$561 CAD
SGD 543 SGD
View
Price last confirmed 8 days ago
Retailer 4
-
$606 CAD
$434 USD
View
Price last confirmed 32 days ago
Retailer 5
-
$617 CAD
$442 USD
View
Price last confirmed 26 days ago
B
Retailer 6
-
$930 CAD
£524 GBP
View
Most Expensive
B
MOH London
A70C9CD1C · Nov 1
$1,224 CAD
£690 GBP
View
6 more retailers have this diamond
Prices start from $383 CADSave up to $841 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 Marquise
$383 CAD