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Marquise|Natural|GIA

0.40ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 7556973931

Certificate GIA 7556973931

Diamond specifications and retailer prices

From $569 AUD
$399 USD
As of November 2, 2026
Save $810 AUD (59%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,573 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 I 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 7556973931. Listed at 18 retailers as of November 2, 2026, with a 142% 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle38.5°
Pavilion angle40.1°
OriginNatural
Grading LabGIA
CertificateGIA 7556973931
Dimensions7.19 × 3.73 × 2.50 mm
L/W Ratio1.93
Girdle conditionFaceted
Culet sizeNone
Top View
7.19 mm3.73 mm0.40 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7556973931
Side View
Table 60.0%Crown 38.5°Girdle: MED-VTKPavilion 40.1°Culet: NDepth 66.9%

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 2
Current: $1,573 AUD|Low: $569 AUD|High: $2,651 AUD|Avg: $935 AUD|-3.0%
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
Retailer 17
November 2, 2026
Retailer 4$569 AUD
Retailer 8$578 AUD
Retailer 16$618 AUD
Retailer 7$622 AUD
Retailer 9$639 AUD
Retailer 3$665 AUD
Retailer 6$665 AUD
Retailer 15$712 AUD
Retailer 11$761 AUD
Retailer 17$773 AUD
Retailer 10$850 AUD
Retailer 5$913 AUD
Retailer 13$923 AUD
Retailer 12$1,056 AUD
Retailer 2$1,379 AUD
MOH London$1,573 AUD
Retailer 14$2,611 AUD

25 data points across 17 retailers

18 retailers$569 AUD to $1,379 AUD

B+
Cheapest Retailer
-
$569 AUD
$399 USD
Final sale: no returns
B+
Retailer 2
-
$578 AUD
$405 USD
View
B+
Retailer 3
-
$618 AUD
$433 USD
View
B+
Retailer 4
-
$622 AUD
$436 USD
View
B
Retailer 5
-
$639 AUD
HK$3,500 HKD
View
B
Retailer 6
-
$665 AUD
$466 USD
View
B
Retailer 7
-
$665 AUD
$466 USD
View
B
Retailer 8
-
$712 AUD
$499 USD
View
B
Retailer 9
-
$761 AUD
$533 USD
View
B
Retailer 10
-
$773 AUD
$542 USD
View
B
Retailer 11
-
$850 AUD
£469 GBP
View
B
Retailer 12
-
$913 AUD
$640 USD
View
B
Retailer 13
-
$923 AUD
€616 EUR
View
C
Retailer 14
-
$1,056 AUD
ZAR 11,961 ZAR
View
Retailer 15
-
$1,111 AUD
View
Price last confirmed 30 days ago
C
Retailer 16
-
$1,379 AUD
£761 GBP
View
Most Expensive
MOH London
87867949D · Nov 2
$1,573 AUD
£868 GBP
View
Price under review
16 more retailers have this diamond
Prices start from $569 AUDSave up to $810 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
$569 AUD