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Marquise|Natural|GIA

0.40ct G SI2 Marquise Natural Diamond

GD • G/SI2 • GIA 2558925739

Certificate GIA 2558925739

Diamond specifications and retailer prices

From $557 AUD
$391 USD
As of November 2, 2026
Save $212 AUD (28%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $769 AUD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2558925739. Listed at 4 retailers as of November 2, 2026, with prices from $557 to $769, a $212 spread on the same certified stone. 77 Diamonds lists it at $769. 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
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2558925739
Dimensions7.21 × 3.89 × 2.46 mm
L/W Ratio1.85
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
7.21 mm3.89 mm0.40 ctG / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2558925739
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $769 AUD|Low: $466 AUD|High: $769 AUD|Avg: $624 AUD|+6.0%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 3$557 AUD
Retailer 2$562 AUD
Retailer 4$658 AUD
77 Diamonds$769 AUD

41 data points across 4 retailers

4 retailers$557 AUD to $769 AUD

A
Cheapest Retailer
-
$557 AUD
$391 USD
Final sale: no returns
A
Retailer 2
-
$562 AUD
$395 USD
View
B+
Retailer 3
-
$658 AUD
SGD 625 SGD
View
Most Expensive
B
77 Diamonds
MQCPMTBP2RWF · Nov 2
$769 AUD
£425 GBP
View
3 more retailers have this diamond
Prices start from $557 AUDSave up to $212 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.

A
0.40ct Marquise
$557 AUD