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Marquise|Natural|GIA

0.51ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 6542875575

Certificate GIA 6542875575

Diamond specifications and retailer prices

From $574 CAD
As of November 5, 2026
Save $1,624 CAD (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,198 CAD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542875575. Listed at 11 retailers as of November 5, 2026, with prices from $574 to $2,198, a $1,624 spread on the same certified stone. NZ Jewellers lists it at $2,198. 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
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6542875575
Dimensions8.25 × 4.10 × 2.70 mm
L/W Ratio2.01
Top View
8.25 mm4.10 mm0.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6542875575
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.9%

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 5
Current: $2,198 CAD|Low: $574 CAD|High: $2,267 CAD|Avg: $863 CAD|-3.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$574 CAD
Retailer 7$617 CAD
Retailer 3$624 CAD
Retailer 4$624 CAD
Retailer 8$662 CAD
Retailer 10$662 CAD
Retailer 2$700 CAD
Retailer 5$702 CAD
Retailer 11$873 CAD
Retailer 6$1,323 CAD
NZ Jewellers$2,198 CAD

36 data points across 11 retailers

11 retailers$574 CAD to $2,198 CAD

A
Cheapest Retailer
-
$574 CAD
A
Retailer 2
-
$617 CAD
View
Retailer 3
-
$624 CAD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$624 CAD
View
A
Retailer 5
-
$662 CAD
View
A
Retailer 6
-
$662 CAD
View
A
Retailer 7
-
$700 CAD
View
A
Retailer 8
-
$702 CAD
View
B+
Retailer 9
-
$873 CAD
View
B
Retailer 10
-
$1,323 CAD
View
Most Expensive
B
NZ Jewellers
6fbe9dc0-4941-4bfd-b195-6b925748c946 · Nov 5
$2,198 CAD
$1,574 USD
View
10 more retailers have this diamond
Prices start from $574 CADSave up to $1,624 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
$574 CAD