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Marquise|Natural|GIA

0.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6555338540

Certificate GIA 6555338540

Diamond specifications and retailer prices

From HK$5,039 HKD
As of November 6, 2026
Save HK$7,571 HKD (60%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$17,156 HKD at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555338540. Listed at 16 retailers as of November 4, 2026, with a 150% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.34°
OriginNatural
Grading LabGIA
CertificateGIA 6555338540
Dimensions8.34 × 4.09 × 2.57 mm
L/W Ratio2.04
Culet sizeNone
Key to symbols
Feather
Top View
8.34 mm4.09 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555338540
Side View
Table 61.0%Crown 33.34°GirdlePavilionCulet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$6,677 HKD|Low: HK$4,624 HKD|High: HK$12,775 HKD|Avg: HK$7,195 HKD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9HK$5,039 HKD
Retailer 11HK$5,173 HKD
Retailer 2HK$5,682 HKD
Retailer 3HK$6,380 HKD
Retailer 4HK$6,505 HKD
Retailer 1HK$6,677 HKD
Retailer 5HK$6,685 HKD
Retailer 10HK$6,897 HKD
Retailer 8HK$7,743 HKD
Retailer 12HK$8,221 HKD
Retailer 6HK$8,441 HKD
Retailer 7HK$12,610 HKD

38 data points across 12 retailers

16 retailersHK$5,039 HKD to HK$12,610 HKD

B+
Cheapest Retailer
-
HK$5,039 HKD
Final sale: no returns
B+
Retailer 2
-
HK$5,173 HKD
View
Retailer 3
-
HK$5,471 HKD
View
Price last confirmed 9 days ago
B+
Retailer 4
-
HK$5,471 HKD
View
B+
Retailer 5
-
HK$5,682 HKD
View
B+
Retailer 6
-
HK$6,309 HKD
View
B
Retailer 7
-
HK$6,380 HKD
View
B
Retailer 8
-
HK$6,505 HKD
View
B
Retailer 9
-
HK$6,677 HKD
View
B
Retailer 10
-
HK$6,685 HKD
View
B
Retailer 11
-
HK$6,897 HKD
View
B
Retailer 12
-
HK$7,743 HKD
View
Retailer 13
-
HK$8,221 HKD
View
Price last confirmed 34 days ago
B
Retailer 14
-
HK$8,441 HKD
View
B
Retailer 15
-
HK$12,610 HKD
View
Most Expensive
NZ Jewellers
24905fea-0709-49c9-a767-e1aae4dd5287 · Nov 5
HK$17,156 HKD
$2,189 USD
View
Price under review
15 more retailers have this diamond
Prices start from HK$5,039 HKDSave up to HK$7,571 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.

B+
0.50ct Marquise
HK$5,039 HKD