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Marquise|Natural|GIA

0.51ct K SI2 Marquise Natural Diamond

GD • K/SI2 • GIA 6194969419

Certificate GIA 6194969419

Diamond specifications and retailer prices

From $802 CAD
As of November 1, 2026
Save $1,343 CAD (63%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,916 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6194969419. Listed at 12 retailers as of November 1, 2026, with a 168% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
K
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6194969419
Dimensions7.54 × 4.39 × 2.65 mm
L/W Ratio1.72
Top View
7.54 mm4.39 mm0.51 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6194969419
Side View
Table 55.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,916 CAD|Low: $802 CAD|High: $2,916 CAD|Avg: $1,290 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5$802 CAD
Retailer 7$843 CAD
Retailer 10$876 CAD
Retailer 6$907 CAD
Retailer 9$907 CAD
Retailer 8$972 CAD
Retailer 3$1,135 CAD
Retailer 2$1,241 CAD
Retailer 4$2,145 CAD
NZ Jewellers$2,916 CAD

42 data points across 10 retailers

12 retailers$802 CAD to $2,145 CAD

B+
Cheapest Retailer
-
$802 CAD
B+
Retailer 2
-
$843 CAD
View
B+
Retailer 3
-
$871 CAD
View
B+
Retailer 4
-
$876 CAD
View
Retailer 5
-
$907 CAD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$907 CAD
View
B
Retailer 7
-
$972 CAD
View
B
Retailer 8
-
$1,030 CAD
View
B
Retailer 9
-
$1,135 CAD
View
B
Retailer 10
-
$1,241 CAD
View
C
Retailer 11
-
$2,145 CAD
View
Most Expensive
NZ Jewellers
a755aec9-ce16-4e04-8139-e7b5f382ec80 · Nov 5
$2,916 CAD
$2,073 USD
View
Price under review
11 more retailers have this diamond
Prices start from $802 CADSave up to $1,343 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.

B+
0.51ct Marquise
$802 CAD