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Marquise|Natural|GIA

0.51ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 6335211635

Certificate GIA 6335211635

Diamond specifications and retailer prices

From HK$4,519 HKD
As of November 1, 2026
Save HK$7,807 HKD (63%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$16,744 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 J 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 6335211635. Listed at 17 retailers as of November 1, 2026, with a 173% 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6335211635
Dimensions6.92 × 4.43 × 2.69 mm
L/W Ratio1.56
Top View
6.92 mm4.43 mm0.51 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6335211635
Side View
Table 60.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 60.7%

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 1
Current: HK$16,744 HKD|Low: HK$4,512 HKD|High: HK$16,744 HKD|Avg: HK$6,952 HKD
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
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 7HK$4,519 HKD
Retailer 8HK$4,668 HKD
Retailer 6HK$4,786 HKD
Retailer 3HK$4,927 HKD
Retailer 15HK$5,335 HKD
Retailer 16HK$5,335 HKD
Retailer 14HK$5,547 HKD
Retailer 17HK$6,159 HKD
Retailer 4HK$6,269 HKD
Retailer 9HK$6,376 HKD
Retailer 10HK$6,533 HKD
Retailer 2HK$6,554 HKD
Retailer 5HK$6,787 HKD
Retailer 12HK$7,596 HKD
Retailer 13HK$8,241 HKD
Retailer 11HK$12,326 HKD
NZ JewellersHK$16,744 HKD

26 data points across 17 retailers

17 retailersHK$4,519 HKD to HK$12,326 HKD

A
Cheapest Retailer
-
HK$4,519 HKD
B+
Retailer 2
-
HK$4,786 HKD
$610 USD
View
B+
Retailer 3
-
HK$4,927 HKD
$628 USD
View
Final sale: no returns
B+
Retailer 4
-
HK$5,335 HKD
$680 USD
View
B+
Retailer 5
-
HK$5,335 HKD
$680 USD
View
B+
Retailer 6
-
HK$5,547 HKD
$707 USD
View
B+
Retailer 7
-
HK$5,551 HKD
SGD 956 SGD
View
B
Retailer 8
-
HK$6,159 HKD
$785 USD
View
B
Retailer 9
-
HK$6,269 HKD
$799 USD
View
B
Retailer 10
-
HK$6,376 HKD
$813 USD
View
B
Retailer 11
-
HK$6,533 HKD
£656 GBP
View
B+
Retailer 12
-
HK$6,554 HKD
£658 GBP
View
B
Retailer 13
-
HK$6,787 HKD
$865 USD
View
B
Retailer 14
-
HK$7,596 HKD
€922 EUR
View
B
Retailer 15
-
HK$8,241 HKD
ZAR 16,968 ZAR
View
B
Retailer 16
-
HK$12,326 HKD
£1,237 GBP
View
Most Expensive
NZ Jewellers
8cb642c9-93eb-4818-901d-5b6b7c670ec0 · Oct 30
HK$16,744 HKD
$2,134 USD
View
Price under review
16 more retailers have this diamond
Prices start from HK$4,519 HKDSave up to HK$7,807 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$4,519 HKD