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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 $805 CAD
HK$4,500 HKD
As of November 1, 2026
Save $1,390 CAD (63%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,982 CAD 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
Color
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: $2,982 CAD|Low: $804 CAD|High: $2,982 CAD|Avg: $1,238 CAD
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 7$805 CAD
Retailer 8$831 CAD
Retailer 6$852 CAD
Retailer 3$878 CAD
Retailer 15$950 CAD
Retailer 16$950 CAD
Retailer 14$988 CAD
Retailer 17$1,097 CAD
Retailer 4$1,117 CAD
Retailer 9$1,135 CAD
Retailer 10$1,164 CAD
Retailer 2$1,167 CAD
Retailer 5$1,209 CAD
Retailer 12$1,353 CAD
Retailer 13$1,468 CAD
Retailer 11$2,195 CAD
NZ Jewellers$2,982 CAD

26 data points across 17 retailers

17 retailers$805 CAD to $2,195 CAD

A
Cheapest Retailer
-
$805 CAD
HK$4,500 HKD
B+
Retailer 2
-
$852 CAD
$610 USD
View
B+
Retailer 3
-
$878 CAD
$628 USD
View
Final sale: no returns
B+
Retailer 4
-
$950 CAD
$680 USD
View
B+
Retailer 5
-
$950 CAD
$680 USD
View
B+
Retailer 6
-
$988 CAD
$707 USD
View
B+
Retailer 7
-
$989 CAD
SGD 956 SGD
View
B
Retailer 8
-
$1,097 CAD
$785 USD
View
B
Retailer 9
-
$1,117 CAD
$799 USD
View
B
Retailer 10
-
$1,135 CAD
$813 USD
View
B
Retailer 11
-
$1,164 CAD
£656 GBP
View
B+
Retailer 12
-
$1,167 CAD
£658 GBP
View
B
Retailer 13
-
$1,209 CAD
$865 USD
View
B
Retailer 14
-
$1,353 CAD
€922 EUR
View
B
Retailer 15
-
$1,468 CAD
ZAR 16,968 ZAR
View
B
Retailer 16
-
$2,195 CAD
£1,237 GBP
View
Most Expensive
NZ Jewellers
8cb642c9-93eb-4818-901d-5b6b7c670ec0 · Oct 30
$2,982 CAD
$2,134 USD
View
Price under review
16 more retailers have this diamond
Prices start from $805 CADSave up to $1,390 CAD

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
$805 CAD