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Marquise|Natural|GIA

0.40ct G SI1 Marquise Natural Diamond

GD • G/SI1 • GIA 6531359310

Certificate GIA 6531359310

Diamond specifications and retailer prices

From $718 AUD
$503 USD
As of November 1, 2026
Save $816 AUD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,751 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6531359310. Listed at 17 retailers as of November 1, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.40
Carat
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6531359310
Dimensions7.69 × 3.93 × 2.32 mm
L/W Ratio1.96
Top View
7.69 mm3.93 mm0.40 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6531359310
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 59.1%

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: $1,751 AUD|Low: $718 AUD|High: $2,419 AUD|Avg: $1,156 AUD|-2.7%
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
Retailer 16
November 2, 2026
Retailer 8$718 AUD
Retailer 3$758 AUD
Retailer 11$763 AUD
Retailer 15$816 AUD
Retailer 16$816 AUD
Retailer 12$875 AUD
Retailer 6$946 AUD
Retailer 10$951 AUD
Retailer 7$953 AUD
Retailer 4$1,039 AUD
Retailer 5$1,042 AUD
Retailer 9$1,130 AUD
Retailer 13$1,175 AUD
Retailer 2$1,534 AUD
MOH London$1,751 AUD
Retailer 14$2,377 AUD

28 data points across 16 retailers

17 retailers$718 AUD to $1,534 AUD

B+
Cheapest Retailer
-
$718 AUD
$503 USD
B+
Retailer 2
-
$758 AUD
$531 USD
View
B+
Retailer 3
-
$763 AUD
$535 USD
View
B
Retailer 4
-
$816 AUD
$572 USD
View
B
Retailer 5
-
$816 AUD
$572 USD
View
B
Retailer 6
-
$875 AUD
$613 USD
View
B
Retailer 7
-
$946 AUD
$663 USD
View
B
Retailer 8
-
$951 AUD
£525 GBP
View
B
Retailer 9
-
$953 AUD
$668 USD
View
B
Retailer 10
-
$1,039 AUD
£573 GBP
View
C
Retailer 11
-
$1,042 AUD
$730 USD
View
B
Retailer 12
-
$1,130 AUD
€754 EUR
View
Retailer 13
-
$1,159 AUD
View
Price last confirmed 28 days ago
B
Retailer 14
-
$1,175 AUD
ZAR 13,307 ZAR
View
B
Retailer 15
-
$1,534 AUD
£846 GBP
View
Most Expensive
MOH London
B1C514864 · Nov 2
$1,751 AUD
£966 GBP
View
Price under review
15 more retailers have this diamond
Prices start from $718 AUDSave up to $816 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
$718 AUD