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Marquise|Natural|GIA

0.50ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 6551294218

Certificate GIA 6551294218

Diamond specifications and retailer prices

From HK$6,606 HKD
$842 USD
As of November 1, 2026
Save HK$6,955 HKD (51%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$13,562 HKD at MOH London · As of November 1, 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 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 6551294218. Listed at 18 retailers as of November 1, 2026, with prices from HK$6,606 to HK$13,562, a HK$6,955 spread on the same certified stone. MOH London lists it at HK$13,562. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.67°
OriginNatural
Grading LabGIA
CertificateGIA 6551294218
Dimensions8.23 × 4.25 × 2.55 mm
L/W Ratio1.94
Key to symbols
Feather
Top View
8.23 mm4.25 mm0.50 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551294218
Side View
Table 64.0%Crown 32.67°Girdle: STK-VTKPavilionCulet: NoneDepth 60.0%

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 1
Current: HK$13,562 HKD|Low: HK$6,261 HKD|High: HK$23,217 HKD|Avg: HK$9,732 HKD|-1.2%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 3, 2026
Retailer 18HK$6,606 HKD
Retailer 15HK$6,826 HKD
Retailer 8HK$7,399 HKD
Retailer 10HK$7,399 HKD
Retailer 16HK$7,477 HKD
Retailer 4HK$7,689 HKD
Retailer 5HK$8,027 HKD
Retailer 6HK$8,449 HKD
Retailer 9HK$8,544 HKD
Retailer 17HK$8,591 HKD
Retailer 2HK$8,593 HKD
Retailer 14HK$8,646 HKD
Retailer 11HK$9,087 HKD
Retailer 12HK$10,422 HKD
Retailer 3HK$11,131 HKD
Retailer 13HK$11,427 HKD
MOH LondonHK$13,562 HKD
Retailer 7HK$23,217 HKD

36 data points across 18 retailers

18 retailersHK$6,606 HKD to HK$13,562 HKD

B+
Cheapest Retailer
-
HK$6,606 HKD
$842 USD
B+
Retailer 2
-
HK$6,826 HKD
$870 USD
View
Final sale: no returns
B+
Retailer 3
-
HK$7,399 HKD
$943 USD
View
B+
Retailer 4
-
HK$7,399 HKD
$943 USD
View
B
Retailer 5
-
HK$7,477 HKD
$953 USD
View
B
Retailer 6
-
HK$7,689 HKD
$980 USD
View
B+
Retailer 7
-
HK$8,027 HKD
$1,023 USD
View
B
Retailer 8
-
HK$8,449 HKD
$1,077 USD
View
B
Retailer 9
-
HK$8,544 HKD
$1,089 USD
View
B
Retailer 10
-
HK$8,591 HKD
$1,095 USD
View
B
Retailer 11
-
HK$8,593 HKD
£862 GBP
View
B
Retailer 12
-
HK$8,646 HKD
$1,102 USD
View
B
Retailer 13
-
HK$9,087 HKD
£912 GBP
View
B
Retailer 14
-
HK$10,422 HKD
€1,265 EUR
View
Retailer 15
-
HK$11,131 HKD
A$2,183 AUD
View
Price last confirmed 30 days ago
B
Retailer 16
-
HK$11,427 HKD
ZAR 23,528 ZAR
View
Most Expensive
B
MOH London
C022C720D · Nov 1
HK$13,562 HKD
£1,361 GBP
View
16 more retailers have this diamond
Prices start from HK$6,606 HKDSave up to HK$6,955 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$6,606 HKD