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Marquise|Natural|GIA

0.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 3545601791

Certificate GIA 3545601791

Diamond specifications and retailer prices

From $832 AUD
$583 USD
As of November 2, 2026
Save $1,466 AUD (64%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,119 AUD at NZ Jewellers · As of October 30, 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 3545601791. Listed at 17 retailers as of November 2, 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3545601791
Dimensions7.82 × 4.05 × 2.39 mm
L/W Ratio1.93
Top View
7.82 mm4.05 mm0.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3545601791
Side View
Table 55.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 59.0%

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: $3,119 AUD|Low: $693 AUD|High: $3,119 AUD|Avg: $1,636 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8$832 AUD
Retailer 10$970 AUD
Retailer 3$1,104 AUD
Retailer 5$1,170 AUD
Retailer 4$1,218 AUD
Retailer 6$1,414 AUD
Retailer 9$1,496 AUD
Retailer 7$1,535 AUD
Retailer 2$2,298 AUD
Retailer 11$2,861 AUD
NZ Jewellers$3,119 AUD

44 data points across 11 retailers

17 retailers$832 AUD to $2,298 AUD

B+
Cheapest Retailer
-
$832 AUD
$583 USD
Final sale: no returns
B+
Retailer 2
-
$902 AUD
$632 USD
View
B+
Retailer 3
-
$927 AUD
$650 USD
View
B+
Retailer 4
-
$937 AUD
$657 USD
View
B+
Retailer 5
-
$970 AUD
$680 USD
View
B+
Retailer 6
-
$970 AUD
$680 USD
View
B
Retailer 7
-
$1,040 AUD
$729 USD
View
B
Retailer 8
-
$1,104 AUD
$774 USD
View
B
Retailer 9
-
$1,170 AUD
$820 USD
View
B
Retailer 10
-
$1,218 AUD
£672 GBP
View
B
Retailer 11
-
$1,414 AUD
€944 EUR
View
B
Retailer 12
-
$1,417 AUD
$993 USD
View
Retailer 13
-
$1,496 AUD
View
Price last confirmed 30 days ago
B
Retailer 14
-
$1,535 AUD
ZAR 17,384 ZAR
View
B
Retailer 15
-
$2,298 AUD
£1,268 GBP
View
Retailer 16
-
$2,861 AUD
CA$2,785 CAD
View
Price under review
Most Expensive
NZ Jewellers
902963e8-edb8-4d90-b627-dfc4491a045a · Oct 30
$3,119 AUD
$2,186 USD
View
Price under review
16 more retailers have this diamond
Prices start from $832 AUDSave up to $1,466 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+
0.50ct Marquise
$832 AUD