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Marquise|Natural|GIA

0.40ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 6562720666

Certificate GIA 6562720666

Diamond specifications and retailer prices

From $668 AUD
$468 USD
As of November 1, 2026
Save $963 AUD (59%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,631 AUD at MOH London · As of November 2, 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 G 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 6562720666. Listed at 15 retailers as of November 1, 2026, with prices from $668 to $1,631, a $963 spread on the same certified stone. MOH London lists it at $1,631. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6562720666
Dimensions7.61 × 3.86 × 2.36 mm
L/W Ratio1.97
Culet sizeNone
Key to symbols
Feather, Twinning Wisp
Top View
7.61 mm3.86 mm0.40 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6562720666
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,631 AUD|Low: $668 AUD|High: $2,705 AUD|Avg: $1,040 AUD
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 2, 2026
Retailer 4$668 AUD
Retailer 7$706 AUD
Retailer 2$761 AUD
Retailer 6$761 AUD
Retailer 8$815 AUD
Retailer 13$882 AUD
Retailer 11$882 AUD
Retailer 10$956 AUD
Retailer 3$967 AUD
Retailer 12$992 AUD
Retailer 5$993 AUD
Retailer 14$1,094 AUD
Retailer 9$1,428 AUD
MOH London$1,631 AUD
Retailer 15$2,705 AUD

6 data points across 15 retailers

15 retailers$668 AUD to $1,631 AUD

B+
Cheapest Retailer
-
$668 AUD
$468 USD
B+
Retailer 2
-
$706 AUD
$495 USD
View
B+
Retailer 3
-
$761 AUD
$533 USD
View
B+
Retailer 4
-
$761 AUD
$533 USD
View
B
Retailer 5
-
$815 AUD
$571 USD
View
B
Retailer 6
-
$882 AUD
$618 USD
View
B+
Retailer 7
-
$882 AUD
£487 GBP
View
B
Retailer 8
-
$956 AUD
€638 EUR
View
B
Retailer 9
-
$967 AUD
£534 GBP
View
B
Retailer 10
-
$992 AUD
$695 USD
View
B
Retailer 11
-
$993 AUD
$696 USD
View
B
Retailer 12
-
$1,094 AUD
ZAR 12,391 ZAR
View
B
Retailer 13
-
$1,428 AUD
£788 GBP
View
Most Expensive
B
MOH London
77A188457 · Nov 2
$1,631 AUD
£900 GBP
View
13 more retailers have this diamond
Prices start from $668 AUDSave up to $963 AUD

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.

B+
0.40ct Marquise
$668 AUD