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Marquise|Natural|GIA

0.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 3555975462

Certificate GIA 3555975462

Diamond specifications and retailer prices

From HK$3,335 HKD
$425 USD
As of November 2, 2026
Save HK$10,522 HKD (76%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$13,856 HKD at NZ Jewellers · As of November 3, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555975462. Listed at 12 retailers as of November 2, 2026, with prices from HK$3,335 to HK$13,856, a HK$10,522 spread on the same certified stone. NZ Jewellers lists it at HK$13,856. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 3555975462
Dimensions4.06 × 9.29 × 2.43 mm
L/W Ratio2.29
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
4.06 mm9.29 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 3555975462
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.9%

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$13,856 HKD|Low: HK$3,272 HKD|High: HK$15,159 HKD|Avg: HK$5,249 HKD|-8.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 8HK$3,335 HKD
Retailer 9HK$3,617 HKD
Retailer 5HK$3,892 HKD
Retailer 3HK$3,986 HKD
Retailer 12HK$4,041 HKD
Retailer 6HK$4,174 HKD
Retailer 10HK$4,174 HKD
Retailer 11HK$4,237 HKD
Retailer 7HK$4,438 HKD
Retailer 2HK$4,503 HKD
Retailer 4HK$5,946 HKD
NZ JewellersHK$13,856 HKD

35 data points across 12 retailers

12 retailersHK$3,335 HKD to HK$13,856 HKD

A
Cheapest Retailer
-
HK$3,335 HKD
$425 USD
Final sale: no returns
A
Retailer 2
-
HK$3,617 HKD
$461 USD
View
A
Retailer 3
-
HK$3,892 HKD
$496 USD
View
A
Retailer 4
-
HK$3,986 HKD
$508 USD
View
A
Retailer 5
-
HK$4,041 HKD
SGD 696 SGD
View
A
Retailer 6
-
HK$4,174 HKD
$532 USD
View
A
Retailer 7
-
HK$4,174 HKD
$532 USD
View
A
Retailer 8
-
HK$4,237 HKD
$540 USD
View
A
Retailer 9
-
HK$4,438 HKD
£445 GBP
View
A
Retailer 10
-
HK$4,503 HKD
£452 GBP
View
Retailer 11
-
HK$5,946 HKD
A$1,166 AUD
View
Price last confirmed 30 days ago
Most Expensive
B
NZ Jewellers
88376718-b8b2-4f68-9965-981372ec3c26 · Nov 3
HK$13,856 HKD
$1,766 USD
View
11 more retailers have this diamond
Prices start from HK$3,335 HKDSave up to HK$10,522 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$3,335 HKD