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Marquise|Natural|GIA

0.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2566118494

Certificate GIA 2566118494

Diamond specifications and retailer prices

From HK$4,318 HKD
As of November 6, 2026
Save HK$11,881 HKD (73%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$19,230 HKD at MOH London · As of November 2, 2026
View at MOH London

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 2566118494. Listed at 13 retailers as of November 5, 2026, with a 275% 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 2566118494
Dimensions8.24 × 4.07 × 2.52 mm
L/W Ratio2.02
Culet sizeNone
Top View
8.24 mm4.07 mm0.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566118494
Side View
Table 60.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 62.0%

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$19,230 HKD|Low: HK$4,318 HKD|High: HK$19,230 HKD|Avg: HK$8,281 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 2HK$4,318 HKD
Retailer 5HK$5,408 HKD
Retailer 6HK$7,571 HKD
Retailer 8HK$8,025 HKD
Retailer 3HK$9,687 HKD
Retailer 11HK$10,494 HKD
Retailer 13HK$10,910 HKD
Retailer 12HK$11,364 HKD
Retailer 4HK$12,109 HKD
Retailer 9HK$12,885 HKD
Retailer 10HK$13,120 HKD
Retailer 7HK$16,200 HKD
MOH LondonHK$19,230 HKD

42 data points across 13 retailers

13 retailersHK$4,318 HKD to HK$16,200 HKD

A
Cheapest Retailer
-
HK$4,318 HKD
Retailer 2
-
HK$5,408 HKD
View
Price last confirmed 10 days ago
B+
Retailer 3
-
HK$7,571 HKD
View
B+
Retailer 4
-
HK$8,025 HKD
View
B
Retailer 5
-
HK$9,687 HKD
View
Final sale: no returns
B
Retailer 6
-
HK$10,494 HKD
View
B
Retailer 7
-
HK$10,910 HKD
View
B
Retailer 8
-
HK$11,364 HKD
View
B
Retailer 9
-
HK$12,109 HKD
View
B
Retailer 10
-
HK$12,885 HKD
View
B
Retailer 11
-
HK$13,120 HKD
View
C
Retailer 12
-
HK$16,200 HKD
View
Most Expensive
MOH London
369E450DD · Nov 2
HK$19,230 HKD
£1,932 GBP
View
Price under review
12 more retailers have this diamond
Prices start from HK$4,318 HKDSave up to HK$11,881 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$4,318 HKD