CaratHunter
Plans
Marquise|Natural|GIA

0.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 6545321237

Certificate GIA 6545321237

Diamond specifications and retailer prices

From $1,028 CAD
As of November 5, 2026
Save $1,170 CAD (53%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,198 CAD at Diamond Exchange Canada · As of November 5, 2026
View at Diamond Exchange Canada

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545321237. Listed at 11 retailers as of November 5, 2026, with prices from $1,028 to $2,198, a $1,170 spread on the same certified stone. Diamond Exchange Canada 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
E
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle41.3°
OriginNatural
Grading LabGIA
CertificateGIA 6545321237
Dimensions8.19 × 4.21 × 2.68 mm
L/W Ratio1.95
Top View
8.19 mm4.21 mm0.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6545321237
Side View
Table 58.0%CrownGirdle: MED-VTKPavilion 41.3°Culet: NoneDepth 63.5%

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: $715 CAD|High: $2,198 CAD|Avg: $1,410 CAD
Diamond Exchange Canada
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
Retailer 18
November 6, 2026
Retailer 10$715 CAD
Retailer 11$1,028 CAD
Retailer 15$1,137 CAD
Retailer 8$1,191 CAD
Retailer 5$1,208 CAD
Retailer 3$1,221 CAD
Retailer 13$1,244 CAD
Retailer 18$1,244 CAD
Retailer 9$1,292 CAD
Retailer 12$1,399 CAD
Retailer 16$1,489 CAD
Retailer 4$1,508 CAD
Retailer 7$1,508 CAD
Retailer 14$1,525 CAD
Retailer 6$1,550 CAD
Retailer 2$1,751 CAD
Retailer 17$2,070 CAD
Diamond Exchange Canada$2,198 CAD

19 data points across 18 retailers

11 retailers$1,028 CAD to $2,198 CAD

A
Cheapest Retailer
-
$1,028 CAD
B+
Retailer 2
-
$1,137 CAD
View
B+
Retailer 3
-
$1,221 CAD
View
B+
Retailer 4
-
$1,244 CAD
View
B+
Retailer 5
-
$1,399 CAD
View
B
Retailer 6
-
$1,508 CAD
View
B
Retailer 7
-
$1,508 CAD
View
B
Retailer 8
-
$1,525 CAD
View
B+
Retailer 9
-
$1,550 CAD
View
B
Retailer 10
-
$1,751 CAD
View
Most Expensive
B
Diamond Exchange Canada
1982807032 · Nov 5
$2,198 CAD
View
10 more retailers have this diamond
Prices start from $1,028 CADSave up to $1,170 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
$1,028 CAD