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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 $1,046 NZD
HK$4,600 HKD
As of November 1, 2026
Save $1,843 NZD (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,924 NZD 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: $3,924 NZD|Low: $1,046 NZD|High: $4,049 NZD|Avg: $1,655 NZD|-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$1,046 NZD
Retailer 18$1,093 NZD
Retailer 15$1,153 NZD
Retailer 10$1,155 NZD
Retailer 14$1,238 NZD
Retailer 17$1,253 NZD
Retailer 8$1,295 NZD
Retailer 3$1,299 NZD
Retailer 2$1,390 NZD
Retailer 11$1,536 NZD
Retailer 7$1,573 NZD
Retailer 5$1,576 NZD
Retailer 6$1,640 NZD
Retailer 12$1,696 NZD
Retailer 4$1,836 NZD
Retailer 16$1,940 NZD
Retailer 13$2,889 NZD
NZ Jewellers$3,924 NZD

22 data points across 18 retailers

19 retailers$1,046 NZD to $2,889 NZD

A
Cheapest Retailer
-
$1,046 NZD
HK$4,600 HKD
A
Retailer 2
-
$1,093 NZD
$615 USD
View
A
Retailer 3
-
$1,153 NZD
$649 USD
View
Final sale: no returns
A
Retailer 4
-
$1,155 NZD
$650 USD
View
A
Retailer 5
-
$1,238 NZD
€664 EUR
View
A
Retailer 6
-
$1,253 NZD
$705 USD
View
Retailer 7
-
$1,295 NZD
SGD 985 SGD
View
Price last confirmed 7 days ago
A
Retailer 8
-
$1,299 NZD
$731 USD
View
B+
Retailer 9
-
$1,390 NZD
£616 GBP
View
B+
Retailer 10
-
$1,536 NZD
£680 GBP
View
B+
Retailer 11
-
$1,573 NZD
$885 USD
View
B+
Retailer 12
-
$1,576 NZD
$887 USD
View
B+
Retailer 13
-
$1,640 NZD
$923 USD
View
B+
Retailer 14
-
$1,696 NZD
€909 EUR
View
Retailer 15
-
$1,836 NZD
$1,033 USD
View
Price last confirmed 7 days ago
B+
Retailer 16
-
$1,940 NZD
ZAR 17,634 ZAR
View
Retailer 17
-
$1,968 NZD
A$1,703 AUD
View
Price last confirmed 30 days ago
B
Retailer 18
-
$2,889 NZD
£1,280 GBP
View
Most Expensive
NZ Jewellers
0bce4cbb-cd49-426c-a1b5-9304e6c395b5 · Nov 3
$3,924 NZD
$2,208 USD
View
Price under review
18 more retailers have this diamond
Prices start from $1,046 NZDSave up to $1,843 NZD

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
$1,046 NZD