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Marquise|Natural|GIA

0.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1558995545

Certificate GIA 1558995545

Diamond specifications and retailer prices

From HK$4,118 HKD
As of November 1, 2026
Save HK$7,272 HKD (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$15,465 HKD at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558995545. Listed at 16 retailers as of November 1, 2026, with a 177% 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558995545
Dimensions7.71 × 4.16 × 2.59 mm
L/W Ratio1.85
Key to symbols
Cloud, Crystal, Feather
Top View
7.71 mm4.16 mm0.50 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558995545
Side View
Table 54.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 62.2%

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$15,465 HKD|Low: HK$4,017 HKD|High: HK$15,465 HKD|Avg: HK$6,517 HKD|+3.2%
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
November 2, 2026
Retailer 4HK$4,118 HKD
Retailer 3HK$4,551 HKD
Retailer 12HK$4,927 HKD
Retailer 15HK$4,982 HKD
Retailer 7HK$5,138 HKD
Retailer 13HK$5,312 HKD
Retailer 14HK$5,312 HKD
Retailer 11HK$5,688 HKD
Retailer 2HK$5,889 HKD
Retailer 5HK$5,924 HKD
Retailer 6HK$5,965 HKD
Retailer 8HK$6,067 HKD
Retailer 10HK$7,258 HKD
Retailer 9HK$11,389 HKD
NZ JewellersHK$15,465 HKD

31 data points across 15 retailers

16 retailersHK$4,118 HKD to HK$11,389 HKD

A
Cheapest Retailer
-
HK$4,118 HKD
A
Retailer 2
-
HK$4,551 HKD
$580 USD
View
Final sale: no returns
A
Retailer 3
-
HK$4,927 HKD
$628 USD
View
B+
Retailer 4
-
HK$4,982 HKD
$635 USD
View
B+
Retailer 5
-
HK$5,138 HKD
SGD 885 SGD
View
B+
Retailer 6
-
HK$5,312 HKD
$677 USD
View
B+
Retailer 7
-
HK$5,312 HKD
$677 USD
View
B+
Retailer 8
-
HK$5,688 HKD
$725 USD
View
B+
Retailer 9
-
HK$5,889 HKD
£591 GBP
View
B+
Retailer 10
-
HK$5,924 HKD
$755 USD
View
B+
Retailer 11
-
HK$5,965 HKD
$760 USD
View
B+
Retailer 12
-
HK$6,067 HKD
£609 GBP
View
Retailer 13
-
HK$6,347 HKD
$809 USD
View
Price last confirmed 15 days ago
B
Retailer 14
-
HK$7,258 HKD
€881 EUR
View
B
Retailer 15
-
HK$11,389 HKD
£1,143 GBP
View
Most Expensive
NZ Jewellers
0baf91a4-6fc7-42cc-8403-433606648c27 · Oct 30
HK$15,465 HKD
$1,971 USD
View
Price under review
15 more retailers have this diamond
Prices start from HK$4,118 HKDSave up to HK$7,272 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$4,118 HKD