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Marquise|Natural|GIA

0.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 5241051030

Certificate GIA 5241051030

Diamond specifications and retailer prices

From $840 AUD
HK$4,600 HKD
As of November 1, 2026
Save $1,479 AUD (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,151 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 G 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 5241051030. Listed at 19 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241051030
Dimensions8.20 × 4.20 × 2.46 mm
L/W Ratio1.95
Girdle conditionFaceted
Top View
8.20 mm4.20 mm0.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5241051030
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.6%

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 1
Current: $3,151 AUD|Low: $840 AUD|High: $3,250 AUD|Avg: $1,329 AUD|-3.1%
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
Retailer 18
November 3, 2026
Retailer 9$840 AUD
Retailer 18$878 AUD
Retailer 15$926 AUD
Retailer 10$927 AUD
Retailer 14$994 AUD
Retailer 17$1,006 AUD
Retailer 8$1,040 AUD
Retailer 3$1,043 AUD
Retailer 2$1,116 AUD
Retailer 11$1,233 AUD
Retailer 7$1,263 AUD
Retailer 5$1,266 AUD
Retailer 6$1,317 AUD
Retailer 12$1,362 AUD
Retailer 4$1,474 AUD
Retailer 16$1,558 AUD
Retailer 13$2,320 AUD
NZ Jewellers$3,151 AUD

22 data points across 18 retailers

19 retailers$840 AUD to $2,320 AUD

A
Cheapest Retailer
-
$840 AUD
HK$4,600 HKD
A
Retailer 2
-
$878 AUD
$615 USD
View
A
Retailer 3
-
$926 AUD
$649 USD
View
Final sale: no returns
A
Retailer 4
-
$927 AUD
$650 USD
View
A
Retailer 5
-
$994 AUD
€664 EUR
View
A
Retailer 6
-
$1,006 AUD
$705 USD
View
Retailer 7
-
$1,040 AUD
SGD 985 SGD
View
Price last confirmed 7 days ago
A
Retailer 8
-
$1,043 AUD
$731 USD
View
B+
Retailer 9
-
$1,116 AUD
£616 GBP
View
B+
Retailer 10
-
$1,233 AUD
£680 GBP
View
B+
Retailer 11
-
$1,263 AUD
$885 USD
View
B+
Retailer 12
-
$1,266 AUD
$887 USD
View
B+
Retailer 13
-
$1,317 AUD
$923 USD
View
B+
Retailer 14
-
$1,362 AUD
€909 EUR
View
Retailer 15
-
$1,474 AUD
$1,033 USD
View
Price last confirmed 7 days ago
B+
Retailer 16
-
$1,558 AUD
ZAR 17,634 ZAR
View
Retailer 17
-
$1,580 AUD
View
Price last confirmed 30 days ago
B
Retailer 18
-
$2,320 AUD
£1,280 GBP
View
Most Expensive
NZ Jewellers
0bce4cbb-cd49-426c-a1b5-9304e6c395b5 · Nov 3
$3,151 AUD
$2,208 USD
View
Price under review
18 more retailers have this diamond
Prices start from $840 AUDSave up to $1,479 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
$840 AUD