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Marquise|Natural|GIA

0.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 1548044206

Certificate GIA 1548044206

Diamond specifications and retailer prices

From $902 AUD
$632 USD
As of November 1, 2026
Save $1,396 AUD (61%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,119 AUD at NZ Jewellers · As of November 3, 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 1548044206. Listed at 14 retailers as of November 1, 2026, with a 155% 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
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1548044206
Dimensions8.32 × 4.08 × 2.53 mm
L/W Ratio2.04
Key to symbols
Feather, Cloud
Top View
8.32 mm4.08 mm0.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 1548044206
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.0%

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 1
Current: $3,119 AUD|Low: $693 AUD|High: $3,119 AUD|Avg: $1,394 AUD
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
November 3, 2026
Retailer 15$693 AUD
Retailer 3$902 AUD
Retailer 8$919 AUD
Retailer 6$927 AUD
Retailer 4$970 AUD
Retailer 16$1,040 AUD
Retailer 14$1,104 AUD
Retailer 7$1,144 AUD
Retailer 12$1,170 AUD
Retailer 5$1,192 AUD
Retailer 2$1,228 AUD
Retailer 10$1,332 AUD
Retailer 11$1,535 AUD
Retailer 9$2,298 AUD
Retailer 13$2,861 AUD
NZ Jewellers$3,119 AUD

24 data points across 16 retailers

14 retailers$902 AUD to $2,298 AUD

B+
Cheapest Retailer
-
$902 AUD
$632 USD
B+
Retailer 2
-
$927 AUD
$650 USD
View
B+
Retailer 3
-
$970 AUD
$680 USD
View
B
Retailer 4
-
$1,040 AUD
$729 USD
View
B
Retailer 5
-
$1,104 AUD
$774 USD
View
B
Retailer 6
-
$1,144 AUD
$802 USD
View
B
Retailer 7
-
$1,170 AUD
$820 USD
View
B
Retailer 8
-
$1,192 AUD
$835 USD
View
B
Retailer 9
-
$1,228 AUD
£678 GBP
View
B
Retailer 10
-
$1,332 AUD
€889 EUR
View
B
Retailer 11
-
$1,535 AUD
ZAR 17,384 ZAR
View
B
Retailer 12
-
$2,298 AUD
£1,268 GBP
View
Retailer 13
-
$2,861 AUD
CA$2,785 CAD
View
Price under review
Most Expensive
NZ Jewellers
92e177b9-a25f-4889-a9b8-e24b7bbe50ef · Nov 3
$3,119 AUD
$2,186 USD
View
Price under review
13 more retailers have this diamond
Prices start from $902 AUDSave up to $1,396 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
$902 AUD