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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 1553998645

Certificate GIA 1553998645

Diamond specifications and retailer prices

From HK$3,816 HKD
As of November 1, 2026
Save HK$10,558 HKD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$14,374 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553998645. Listed at 15 retailers as of October 30, 2026, with prices from HK$3,816 to HK$14,374, a HK$10,558 spread on the same certified stone. NZ Jewellers lists it at HK$14,374. 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

0.51
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceVery Strong
OriginNatural
Grading LabGIA
CertificateGIA 1553998645
Dimensions8.26 × 4.07 × 2.63 mm
L/W Ratio2.03
Key to symbols
Feather, Crystal
Top View
8.26 mm4.07 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceVery Strong
CertificateGIA 1553998645
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.6%

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$14,374 HKD|Low: HK$3,711 HKD|High: HK$14,978 HKD|Avg: HK$6,343 HKD|+4.4%
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
November 2, 2026
Retailer 3HK$3,816 HKD
Retailer 4HK$4,229 HKD
Retailer 12HK$4,582 HKD
Retailer 6HK$4,773 HKD
Retailer 13HK$4,935 HKD
Retailer 14HK$4,935 HKD
Retailer 11HK$5,288 HKD
Retailer 2HK$5,474 HKD
Retailer 7HK$5,578 HKD
Retailer 5HK$5,626 HKD
Retailer 10HK$5,743 HKD
Retailer 9HK$6,780 HKD
Retailer 8HK$10,582 HKD
NZ JewellersHK$14,374 HKD

27 data points across 14 retailers

15 retailersHK$3,816 HKD to HK$14,374 HKD

A
Cheapest Retailer
-
HK$3,816 HKD
B+
Retailer 2
-
HK$4,229 HKD
$539 USD
View
Final sale: no returns
A
Retailer 3
-
HK$4,582 HKD
$584 USD
View
A
Retailer 4
-
HK$4,773 HKD
SGD 822 SGD
View
Retailer 5
-
HK$4,904 HKD
$625 USD
View
Price last confirmed 26 days ago
A
Retailer 6
-
HK$4,935 HKD
$629 USD
View
A
Retailer 7
-
HK$4,935 HKD
$629 USD
View
A
Retailer 8
-
HK$5,288 HKD
$674 USD
View
A
Retailer 9
-
HK$5,474 HKD
£549 GBP
View
B+
Retailer 10
-
HK$5,578 HKD
£560 GBP
View
A
Retailer 11
-
HK$5,626 HKD
$717 USD
View
B+
Retailer 12
-
HK$5,743 HKD
£576 GBP
View
B+
Retailer 13
-
HK$6,780 HKD
€823 EUR
View
B
Retailer 14
-
HK$10,582 HKD
£1,062 GBP
View
Most Expensive
B
NZ Jewellers
cd7321ad-4ad1-46ac-9f13-61380a8cffbd · Oct 30
HK$14,374 HKD
$1,832 USD
View
14 more retailers have this diamond
Prices start from HK$3,816 HKDSave up to HK$10,558 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
0.51ct Marquise
HK$3,816 HKD