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Marquise|Natural|GIA

0.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6562612974

Certificate GIA 6562612974

Diamond specifications and retailer prices

From HK$3,570 HKD
$455 USD
As of November 2, 2026
Save HK$11,589 HKD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$15,159 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 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 6562612974. Listed at 14 retailers as of October 30, 2026, with prices from HK$3,570 to HK$15,159, a HK$11,589 spread on the same certified stone. NZ Jewellers lists it at HK$15,159. 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 6562612974
Dimensions8.00 × 4.23 × 2.67 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
8.00 mm4.23 mm0.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6562612974
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: 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$15,159 HKD|Low: HK$3,570 HKD|High: HK$15,159 HKD|Avg: HK$5,638 HKD|+19.7%
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 11HK$3,570 HKD
Retailer 13HK$3,868 HKD
Retailer 12HK$4,002 HKD
Retailer 2HK$4,166 HKD
Retailer 6HK$4,260 HKD
Retailer 5HK$4,297 HKD
Retailer 8HK$4,464 HKD
Retailer 14HK$4,464 HKD
Retailer 3HK$4,512 HKD
Retailer 9HK$4,750 HKD
Retailer 10HK$4,837 HKD
Retailer 4HK$5,335 HKD
Retailer 7HK$8,938 HKD
NZ JewellersHK$15,159 HKD

13 data points across 14 retailers

14 retailersHK$3,570 HKD to HK$15,159 HKD

A
Cheapest Retailer
-
HK$3,570 HKD
$455 USD
Final sale: no returns
A
Retailer 2
-
HK$3,868 HKD
$493 USD
View
A
Retailer 3
-
HK$4,002 HKD
$510 USD
View
A
Retailer 4
-
HK$4,166 HKD
$531 USD
View
A
Retailer 5
-
HK$4,260 HKD
$543 USD
View
A
Retailer 6
-
HK$4,297 HKD
SGD 740 SGD
View
A
Retailer 7
-
HK$4,464 HKD
$569 USD
View
A
Retailer 8
-
HK$4,464 HKD
$569 USD
View
A
Retailer 9
-
HK$4,512 HKD
$575 USD
View
A
Retailer 10
-
HK$4,750 HKD
£477 GBP
View
A
Retailer 11
-
HK$4,837 HKD
£485 GBP
View
B+
Retailer 12
-
HK$5,335 HKD
$680 USD
View
B
Retailer 13
-
HK$8,938 HKD
£897 GBP
View
Most Expensive
C
NZ Jewellers
0b52d66a-7e99-4f9c-a014-51de6eea188d · Oct 30
HK$15,159 HKD
$1,932 USD
View
13 more retailers have this diamond
Prices start from HK$3,570 HKDSave up to HK$11,589 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$3,570 HKD