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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 7558566290

Certificate GIA 7558566290

Diamond specifications and retailer prices

From HK$4,668 HKD
$595 USD
As of November 2, 2026
Save HK$11,220 HKD (71%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$15,888 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 7558566290. Listed at 6 retailers as of October 30, 2026, with prices from HK$4,668 to HK$15,888, a HK$11,220 spread on the same certified stone. NZ Jewellers lists it at HK$15,888. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
OriginNatural
Grading LabGIA
CertificateGIA 7558566290
Dimensions8.17 × 4.20 × 2.60 mm
L/W Ratio1.95
Culet sizeNone
Key to symbols
Feather
Top View
8.17 mm4.20 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7558566290
Side View
Table 58.0%Crown 34°Girdle: STK-VTKPavilionCulet: NoneDepth 61.9%

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 2
Current: HK$15,888 HKD|Low: HK$4,449 HKD|High: HK$16,493 HKD|Avg: HK$7,938 HKD|-3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6HK$4,668 HKD
Retailer 5HK$4,900 HKD
Retailer 3HK$6,189 HKD
Retailer 4HK$6,349 HKD
Retailer 2HK$6,797 HKD
NZ JewellersHK$15,888 HKD

42 data points across 6 retailers

6 retailersHK$4,668 HKD to HK$15,888 HKD

A
Cheapest Retailer
-
HK$4,668 HKD
$595 USD
Final sale: no returns
A
Retailer 2
-
HK$4,900 HKD
SGD 844 SGD
View
B+
Retailer 3
-
HK$6,189 HKD
£621 GBP
View
B+
Retailer 4
-
HK$6,349 HKD
£637 GBP
View
B+
Retailer 5
-
HK$6,797 HKD
€825 EUR
View
Most Expensive
B
NZ Jewellers
00d38d6e-a376-4577-80d4-d40c8aeb1dae · Oct 30
HK$15,888 HKD
$2,025 USD
View
5 more retailers have this diamond
Prices start from HK$4,668 HKDSave up to HK$11,220 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$4,668 HKD