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Marquise|Natural|GIA

0.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 1568415063

Certificate GIA 1568415063

Diamond specifications and retailer prices

From HK$4,088 HKD
$521 USD
As of November 2, 2026
Save HK$6,524 HKD (61%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$18,164 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 1568415063. Listed at 11 retailers as of November 2, 2026, with a 160% 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

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

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1568415063
Dimensions7.96 × 4.17 × 2.63 mm
L/W Ratio1.91
Girdle conditionVery Thick
Top View
7.96 mm4.17 mm0.51 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1568415063
Side View
Table 56.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 63.0%

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$18,164 HKD|Low: HK$4,088 HKD|High: HK$18,164 HKD|Avg: HK$7,720 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10HK$4,088 HKD
Retailer 2HK$4,348 HKD
Retailer 7HK$5,296 HKD
Retailer 8HK$5,885 HKD
Retailer 9HK$6,831 HKD
Retailer 4HK$6,894 HKD
Retailer 3HK$6,918 HKD
Retailer 6HK$8,214 HKD
Retailer 5HK$10,612 HKD
NZ JewellersHK$18,164 HKD

29 data points across 10 retailers

11 retailersHK$4,088 HKD to HK$10,612 HKD

A
Cheapest Retailer
-
HK$4,088 HKD
$521 USD
Final sale: no returns
A
Retailer 2
-
HK$4,348 HKD
₹52,782 INR
View
Retailer 3
-
HK$5,296 HKD
$675 USD
View
Price last confirmed 15 days ago
B+
Retailer 4
-
HK$5,885 HKD
$750 USD
View
B+
Retailer 5
-
HK$6,661 HKD
$849 USD
View
B+
Retailer 6
-
HK$6,831 HKD
$871 USD
View
B+
Retailer 7
-
HK$6,894 HKD
£692 GBP
View
B+
Retailer 8
-
HK$6,918 HKD
£694 GBP
View
B+
Retailer 9
-
HK$8,214 HKD
€997 EUR
View
B
Retailer 10
-
HK$10,612 HKD
£1,065 GBP
View
Most Expensive
NZ Jewellers
90ecfe96-ec6a-4556-8cca-2b43e5702c51 · Oct 30
HK$18,164 HKD
$2,315 USD
View
Price under review
10 more retailers have this diamond
Prices start from HK$4,088 HKDSave up to HK$6,524 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$4,088 HKD