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Marquise|Natural|GIA

0.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6555438330

Certificate GIA 6555438330

Diamond specifications and retailer prices

From $521 AUD
As of November 4, 2026
Save $1,832 AUD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,353 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter 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 6555438330. Listed at 11 retailers as of November 4, 2026, with prices from $521 to $2,353, a $1,832 spread on the same certified stone. NZ Jewellers lists it at $2,353. 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

0.50
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555438330
Dimensions8.44 × 4.16 × 2.41 mm
L/W Ratio2.03
Girdle conditionThick to Very Thick
Key to symbols
Feather, Crystal
Top View
8.44 mm4.16 mm0.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555438330
Side View
Table 65.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 57.9%

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 4
Current: $2,353 AUD|Low: $521 AUD|High: $2,397 AUD|Avg: $1,019 AUD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 11$521 AUD
Retailer 5$552 AUD
Retailer 10$633 AUD
Retailer 8$751 AUD
Retailer 9$796 AUD
Retailer 3$805 AUD
Retailer 7$808 AUD
Retailer 6$915 AUD
Retailer 2$1,217 AUD
Retailer 4$1,723 AUD
NZ Jewellers$2,353 AUD

28 data points across 11 retailers

11 retailers$521 AUD to $2,353 AUD

A
Cheapest Retailer
-
$521 AUD
Final sale: no returns
A
Retailer 2
-
$552 AUD
View
A
Retailer 3
-
$633 AUD
View
A
Retailer 4
-
$751 AUD
View
A
Retailer 5
-
$796 AUD
View
Retailer 6
-
$805 AUD
View
Price last confirmed 13 days ago
A
Retailer 7
-
$808 AUD
View
B+
Retailer 8
-
$915 AUD
View
B+
Retailer 9
-
$1,217 AUD
View
B
Retailer 10
-
$1,723 AUD
View
Most Expensive
B
NZ Jewellers
62cd1bc3-5fc8-42e9-84af-cd8d77ad2090 · Nov 5
$2,353 AUD
$1,617 USD
View
10 more retailers have this diamond
Prices start from $521 AUDSave up to $1,832 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
0.50ct Marquise
$521 AUD