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Marquise|Natural|GIA

0.50ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 6555767334

Certificate GIA 6555767334

Diamond specifications and retailer prices

From HK$5,022 HKD
As of November 1, 2026
Save HK$7,325 HKD (59%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$21,130 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555767334. Listed at 20 retailers as of November 1, 2026, with a 146% 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle37.5°
OriginNatural
Grading LabGIA
CertificateGIA 6555767334
Dimensions8.92 × 4.18 × 2.37 mm
L/W Ratio2.13
Key to symbols
Feather
Top View
8.92 mm4.18 mm0.50 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555767334
Side View
Table 59.0%Crown 32.2°Girdle: STK-VTKPavilion 37.5°Culet: NoneDepth 56.6%

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$21,130 HKD|Low: HK$4,821 HKD|High: HK$21,130 HKD|Avg: HK$8,460 HKD|+6.7%
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 3HK$5,022 HKD
Retailer 10HK$6,010 HKD
Retailer 4HK$6,214 HKD
Retailer 16HK$6,740 HKD
Retailer 18HK$6,740 HKD
Retailer 9HK$6,826 HKD
Retailer 8HK$6,985 HKD
Retailer 17HK$6,999 HKD
Retailer 5HK$7,462 HKD
Retailer 15HK$7,775 HKD
Retailer 7HK$7,782 HKD
Retailer 6HK$8,003 HKD
Retailer 2HK$8,121 HKD
Retailer 12HK$8,272 HKD
Retailer 13HK$9,507 HKD
Retailer 14HK$10,402 HKD
Retailer 11HK$12,346 HKD
NZ JewellersHK$21,130 HKD

25 data points across 18 retailers

20 retailersHK$5,022 HKD to HK$12,346 HKD

A
Cheapest Retailer
-
HK$5,022 HKD
Retailer 2
-
HK$6,010 HKD
$766 USD
View
Price last confirmed 15 days ago
B+
Retailer 3
-
HK$6,214 HKD
$792 USD
View
Final sale: no returns
B+
Retailer 4
-
HK$6,669 HKD
$850 USD
View
B+
Retailer 5
-
HK$6,740 HKD
$859 USD
View
B+
Retailer 6
-
HK$6,740 HKD
$859 USD
View
B+
Retailer 7
-
HK$6,826 HKD
$870 USD
View
B+
Retailer 8
-
HK$6,985 HKD
SGD 1,203 SGD
View
B+
Retailer 9
-
HK$6,999 HKD
$892 USD
View
B+
Retailer 10
-
HK$7,462 HKD
$951 USD
View
B+
Retailer 11
-
HK$7,775 HKD
$991 USD
View
B+
Retailer 12
-
HK$7,782 HKD
$992 USD
View
B+
Retailer 13
-
HK$8,003 HKD
$1,020 USD
View
B+
Retailer 14
-
HK$8,121 HKD
£815 GBP
View
B+
Retailer 15
-
HK$8,272 HKD
£830 GBP
View
B
Retailer 16
-
HK$9,507 HKD
€1,154 EUR
View
Retailer 17
-
HK$10,133 HKD
A$1,987 AUD
View
Price last confirmed 29 days ago
B
Retailer 18
-
HK$10,402 HKD
ZAR 21,417 ZAR
View
B
Retailer 19
-
HK$12,346 HKD
£1,239 GBP
View
Most Expensive
NZ Jewellers
0404b563-645a-408c-9631-26567cf1751a · Nov 3
HK$21,130 HKD
$2,693 USD
View
Price under review
19 more retailers have this diamond
Prices start from HK$5,022 HKDSave up to HK$7,325 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$5,022 HKD