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Marquise|Natural|GIA

0.50ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 1558597869

Certificate GIA 1558597869

Diamond specifications and retailer prices

From $731 AUD
HK$4,000 HKD
As of November 1, 2026
Save $1,283 AUD (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,734 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1558597869. Listed at 16 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. 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

0.50
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle37.85°
Pavilion angle39.39°
OriginNatural
Grading LabGIA
CertificateGIA 1558597869
Dimensions8.02 × 4.10 × 2.60 mm
L/W Ratio1.96
Girdle conditionFaceted
Key to symbols
Cloud, Twinning Wisp
Top View
8.02 mm4.10 mm0.50 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1558597869
Side View
Table 59.0%Crown 37.85°Girdle: THK-VTKPavilion 39.39°Culet: NoneDepth 63.5%

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: $2,734 AUD|Low: $731 AUD|High: $2,818 AUD|Avg: $1,279 AUD|-3.0%
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
November 3, 2026
Retailer 16$731 AUD
Retailer 4$803 AUD
Retailer 3$854 AUD
Retailer 6$896 AUD
Retailer 7$912 AUD
Retailer 13$939 AUD
Retailer 14$939 AUD
Retailer 2$990 AUD
Retailer 5$1,006 AUD
Retailer 9$1,070 AUD
Retailer 15$1,191 AUD
Retailer 10$1,285 AUD
Retailer 12$1,346 AUD
Retailer 8$1,352 AUD
Retailer 11$2,013 AUD
NZ Jewellers$2,734 AUD

38 data points across 16 retailers

16 retailers$731 AUD to $2,013 AUD

B+
Cheapest Retailer
-
$731 AUD
HK$4,000 HKD
B+
Retailer 2
-
$803 AUD
$563 USD
View
Final sale: no returns
B+
Retailer 3
-
$854 AUD
SGD 809 SGD
View
B+
Retailer 4
-
$896 AUD
SGD 849 SGD
View
B+
Retailer 5
-
$912 AUD
$639 USD
View
B+
Retailer 6
-
$939 AUD
$658 USD
View
B+
Retailer 7
-
$939 AUD
$658 USD
View
B
Retailer 8
-
$990 AUD
£546 GBP
View
B
Retailer 9
-
$1,006 AUD
$705 USD
View
B
Retailer 10
-
$1,070 AUD
£591 GBP
View
B
Retailer 11
-
$1,191 AUD
$835 USD
View
B
Retailer 12
-
$1,285 AUD
€858 EUR
View
B
Retailer 13
-
$1,346 AUD
ZAR 15,236 ZAR
View
Retailer 14
-
$1,352 AUD
View
Price last confirmed 30 days ago
B
Retailer 15
-
$2,013 AUD
£1,111 GBP
View
Most Expensive
NZ Jewellers
853c07dd-cc0c-4a75-b049-7a17799a9cf8 · Nov 3
$2,734 AUD
$1,916 USD
View
Price under review
15 more retailers have this diamond
Prices start from $731 AUDSave up to $1,283 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
$731 AUD