CaratHunter
Plans
Marquise|Natural|GIA

0.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 5241051030

Certificate GIA 5241051030

Diamond specifications and retailer prices

From HK$4,620 HKD
As of November 1, 2026
Save HK$8,135 HKD (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$17,324 HKD 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: HK$17,324 HKD|Low: HK$4,620 HKD|High: HK$17,873 HKD|Avg: HK$7,306 HKD|-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 9HK$4,620 HKD
Retailer 18HK$4,825 HKD
Retailer 15HK$5,092 HKD
Retailer 10HK$5,100 HKD
Retailer 14HK$5,466 HKD
Retailer 17HK$5,532 HKD
Retailer 8HK$5,719 HKD
Retailer 3HK$5,735 HKD
Retailer 2HK$6,135 HKD
Retailer 11HK$6,780 HKD
Retailer 7HK$6,944 HKD
Retailer 5HK$6,959 HKD
Retailer 6HK$7,241 HKD
Retailer 12HK$7,489 HKD
Retailer 4HK$8,107 HKD
Retailer 16HK$8,564 HKD
Retailer 13HK$12,755 HKD
NZ JewellersHK$17,324 HKD

22 data points across 18 retailers

19 retailersHK$4,620 HKD to HK$12,755 HKD

A
Cheapest Retailer
-
HK$4,620 HKD
A
Retailer 2
-
HK$4,825 HKD
$615 USD
View
A
Retailer 3
-
HK$5,092 HKD
$649 USD
View
Final sale: no returns
A
Retailer 4
-
HK$5,100 HKD
$650 USD
View
A
Retailer 5
-
HK$5,466 HKD
€664 EUR
View
A
Retailer 6
-
HK$5,532 HKD
$705 USD
View
Retailer 7
-
HK$5,719 HKD
SGD 985 SGD
View
Price last confirmed 7 days ago
A
Retailer 8
-
HK$5,735 HKD
$731 USD
View
B+
Retailer 9
-
HK$6,135 HKD
£616 GBP
View
B+
Retailer 10
-
HK$6,780 HKD
£680 GBP
View
B+
Retailer 11
-
HK$6,944 HKD
$885 USD
View
B+
Retailer 12
-
HK$6,959 HKD
$887 USD
View
B+
Retailer 13
-
HK$7,241 HKD
$923 USD
View
B+
Retailer 14
-
HK$7,489 HKD
€909 EUR
View
Retailer 15
-
HK$8,107 HKD
$1,033 USD
View
Price last confirmed 7 days ago
B+
Retailer 16
-
HK$8,564 HKD
ZAR 17,634 ZAR
View
Retailer 17
-
HK$8,688 HKD
A$1,703 AUD
View
Price last confirmed 30 days ago
B
Retailer 18
-
HK$12,755 HKD
£1,280 GBP
View
Most Expensive
NZ Jewellers
0bce4cbb-cd49-426c-a1b5-9304e6c395b5 · Nov 3
HK$17,324 HKD
$2,208 USD
View
Price under review
18 more retailers have this diamond
Prices start from HK$4,620 HKDSave up to HK$8,135 HKD

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
HK$4,620 HKD