CaratHunter
Plans
Marquise|Natural|GIA

0.50ct F SI1 Marquise Natural Diamond

ID • F/SI1 • GIA 2557610480

Certificate GIA 2557610480

Diamond specifications and retailer prices

From HK$3,644 HKD
As of November 6, 2026
Save HK$12,618 HKD (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$18,097 HKD at NZ Jewellers · As of September 20, 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 2557610480. Listed at 12 retailers as of November 5, 2026, with a 346% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2557610480
Dimensions7.74 × 4.06 × 2.64 mm
L/W Ratio1.91
Girdle conditionVery Thick
Top View
7.74 mm4.06 mm0.50 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2557610480
Side View
Table 60.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 65.0%

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 6
Current: HK$16,263 HKD|Low: HK$3,644 HKD|High: HK$17,767 HKD|Avg: HK$7,741 HKD|-8.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 11HK$3,644 HKD
Retailer 6HK$3,848 HKD
Retailer 10HK$6,137 HKD
Retailer 4HK$6,325 HKD
Retailer 9HK$6,497 HKD
Retailer 5HK$6,623 HKD
Retailer 7HK$7,336 HKD
Retailer 8HK$8,002 HKD
Retailer 3HK$8,511 HKD
Retailer 2HK$11,913 HKD
NZ JewellersHK$16,263 HKD

37 data points across 11 retailers

12 retailersHK$3,644 HKD to HK$16,263 HKD

A
Cheapest Retailer
-
HK$3,644 HKD
Final sale: no returns
A
Retailer 2
-
HK$3,848 HKD
View
B+
Retailer 3
-
HK$6,137 HKD
View
B+
Retailer 4
-
HK$6,325 HKD
View
Retailer 5
-
HK$6,497 HKD
View
Price last confirmed 8 days ago
A
Retailer 6
-
HK$6,623 HKD
View
B+
Retailer 7
-
HK$7,336 HKD
View
B+
Retailer 8
-
HK$8,002 HKD
View
Retailer 9
-
HK$8,511 HKD
View
Price last confirmed 34 days ago
B
Retailer 10
-
HK$11,913 HKD
View
B
Retailer 11
-
HK$16,263 HKD
View
Most Expensive
NZ Jewellers
41ac391f-054d-44d6-bd7c-67501b39083f · Sep 20
HK$18,097 HKD
$2,309 USD
View
Price under review
11 more retailers have this diamond
Prices start from HK$3,644 HKDSave up to HK$12,618 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$3,644 HKD