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Marquise|Natural|GIA

0.40ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 1563201231

Certificate GIA 1563201231

Diamond specifications and retailer prices

From $361 AUD
$253 USD
As of November 2, 2026
Save $636 AUD (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,956 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-carat band, graded J 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 1563201231. Listed at 18 retailers as of November 1, 2026, with a 176% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
Crown angle39.2°
Pavilion angle40.7°
OriginNatural
Grading LabGIA
CertificateGIA 1563201231
Dimensions7.38 × 3.80 × 2.45 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizeNone
Top View
7.38 mm3.80 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1563201231
Side View
Table 60.0%Crown 39.2°Girdle: MED-VTKPavilion 40.7°Culet: NoneDepth 64.4%

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 2
Current: $1,956 AUD|Low: $361 AUD|High: $1,956 AUD|Avg: $665 AUD|+16.0%
NZ Jewellers
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 3, 2026
Retailer 4$361 AUD
Retailer 5$380 AUD
Retailer 12$391 AUD
Retailer 8$422 AUD
Retailer 10$437 AUD
Retailer 9$438 AUD
Retailer 14$527 AUD
Retailer 2$547 AUD
Retailer 16$565 AUD
Retailer 17$568 AUD
Retailer 3$669 AUD
Retailer 6$691 AUD
Retailer 7$713 AUD
Retailer 15$818 AUD
Retailer 11$874 AUD
Retailer 13$997 AUD
NZ Jewellers$1,956 AUD

27 data points across 17 retailers

18 retailers$361 AUD to $997 AUD

A
Cheapest Retailer
-
$361 AUD
$253 USD
Final sale: no returns
A
Retailer 2
-
$378 AUD
$265 USD
View
A
Retailer 3
-
$380 AUD
$266 USD
View
A
Retailer 4
-
$391 AUD
$274 USD
View
A
Retailer 5
-
$422 AUD
$296 USD
View
A
Retailer 6
-
$437 AUD
$306 USD
View
A
Retailer 7
-
$438 AUD
HK$2,400 HKD
View
B+
Retailer 8
-
$527 AUD
$369 USD
View
B+
Retailer 9
-
$547 AUD
£302 GBP
View
B+
Retailer 10
-
$565 AUD
$396 USD
View
B+
Retailer 11
-
$568 AUD
$398 USD
View
B+
Retailer 12
-
$669 AUD
ZAR 7,579 ZAR
View
B
Retailer 13
-
$691 AUD
$485 USD
View
B
Retailer 14
-
$713 AUD
$500 USD
View
B
Retailer 15
-
$818 AUD
€546 EUR
View
B
Retailer 16
-
$874 AUD
£482 GBP
View
B
Retailer 17
-
$997 AUD
£550 GBP
View
Most Expensive
NZ Jewellers
6d49b65a-c097-4767-8cc5-23db7369fed4 · Nov 3
$1,956 AUD
$1,371 USD
View
Price under review
17 more retailers have this diamond
Prices start from $361 AUDSave up to $636 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
$361 AUD