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Marquise|Natural|GIA

0.50ct G SI2 Marquise Natural Diamond

VG • G/SI2 • GIA 1558178635

Certificate GIA 1558178635

Diamond specifications and retailer prices

From HK$3,472 HKD
As of November 6, 2026
Save HK$6,889 HKD (66%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$14,648 HKD at NZ Jewellers · As of September 21, 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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1558178635. Listed at 19 retailers as of November 4, 2026, with a 198% 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
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558178635
Dimensions8.39 × 4.20 × 2.38 mm
L/W Ratio2.00
Key to symbols
Twinning Wisp, Feather
Top View
8.39 mm4.20 mm0.50 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558178635
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 56.7%

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 6
Current: HK$5,204 HKD|Low: HK$3,472 HKD|High: HK$14,178 HKD|Avg: HK$7,043 HKD|-4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2HK$3,472 HKD
Retailer 9HK$4,138 HKD
Retailer 3HK$4,671 HKD
Retailer 1HK$5,204 HKD
Retailer 5HK$5,455 HKD
Retailer 7HK$5,627 HKD
Retailer 4HK$6,615 HKD
Retailer 6HK$10,361 HKD
Retailer 8HK$14,131 HKD

35 data points across 9 retailers

19 retailersHK$3,472 HKD to HK$10,361 HKD

A
Cheapest Retailer
-
HK$3,472 HKD
A
Retailer 2
-
HK$3,809 HKD
View
A
Retailer 3
-
HK$4,138 HKD
View
Final sale: no returns
Retailer 4
-
HK$4,491 HKD
View
Price last confirmed 11 days ago
Retailer 5
-
HK$4,671 HKD
View
Price last confirmed 45 days ago
A
Retailer 6
-
HK$4,671 HKD
View
Retailer 7
-
HK$4,836 HKD
View
Price last confirmed 12 days ago
Retailer 8
-
HK$4,836 HKD
View
Price last confirmed 12 days ago
Retailer 9
-
HK$5,181 HKD
View
Price last confirmed 14 days ago
A
Retailer 10
-
HK$5,204 HKD
View
Retailer 11
-
HK$5,392 HKD
View
Price last confirmed 45 days ago
B+
Retailer 12
-
HK$5,455 HKD
View
B+
Retailer 13
-
HK$5,518 HKD
View
B+
Retailer 14
-
HK$5,627 HKD
View
B+
Retailer 15
-
HK$6,615 HKD
View
B
Retailer 16
-
HK$10,361 HKD
View
Retailer 17
-
HK$14,092 HKD
View
Price last confirmed 13 days ago
Retailer 18
-
HK$14,131 HKD
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
ee36a515-ba75-4f10-b126-7fe2a8aa3ec7 · Sep 21
HK$14,648 HKD
$1,869 USD
View
Price last confirmed 46 days ago
18 more retailers have this diamond
Prices start from HK$3,472 HKDSave up to HK$6,889 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$3,472 HKD