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Marquise|Natural|GIA

0.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6541370134

Certificate GIA 6541370134

Diamond specifications and retailer prices

From $1,204 CAD
$857 USD
As of October 28, 2026
Save $1,447 CAD (55%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,512 CAD at NZ Jewellers · As of October 27, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541370134. Listed at 23 retailers as of October 28, 2026, with a 120% 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541370134
Dimensions8.12 × 4.15 × 2.57 mm
L/W Ratio1.96
Top View
8.12 mm4.15 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541370134
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 61.8%

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: Oct 28
Current: $1,688 CAD|Low: $1,003 CAD|High: $2,669 CAD|Avg: $1,722 CAD|+6.0%
Retailer 1
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
October 29, 2026
Retailer 12$1,204 CAD
Retailer 10$1,208 CAD
Retailer 2$1,305 CAD
Retailer 5$1,318 CAD
Retailer 14$1,469 CAD
Retailer 11$1,524 CAD
Retailer 6$1,587 CAD
Retailer 4$1,620 CAD
Retailer 1$1,688 CAD
Retailer 13$1,883 CAD
Retailer 8$2,018 CAD
Retailer 9$2,217 CAD
Retailer 3$2,332 CAD
Retailer 7$2,651 CAD

45 data points across 14 retailers

23 retailers$1,204 CAD to $2,651 CAD

A
Cheapest Retailer
-
$1,204 CAD
$857 USD
Final sale: no returns
A
Retailer 2
-
$1,208 CAD
$860 USD
View
Price last confirmed 11 days ago
B+
Retailer 3
-
$1,290 CAD
$918 USD
View
B+
Retailer 4
-
$1,300 CAD
A$1,424 AUD
View
B+
Retailer 5
-
$1,305 CAD
$929 USD
View
B+
Retailer 6
-
$1,305 CAD
$929 USD
View
B+
Retailer 7
-
$1,318 CAD
$938 USD
View
B+
Retailer 8
-
$1,354 CAD
$964 USD
View
B+
Retailer 9
-
$1,469 CAD
$1,046 USD
View
B
Retailer 10
-
$1,504 CAD
$1,071 USD
View
B
Retailer 11
-
$1,524 CAD
$1,085 USD
View
B+
Retailer 12
-
$1,587 CAD
$1,130 USD
View
B+
Retailer 13
-
$1,587 CAD
$1,130 USD
View
B+
Retailer 14
-
$1,620 CAD
$1,153 USD
View
B+
Retailer 15
-
$1,643 CAD
$1,170 USD
View
B+
Retailer 16
-
$1,688 CAD
£946 GBP
View
B
Retailer 17
-
$1,883 CAD
A$2,062 AUD
View
Price last confirmed 25 days ago
B
Retailer 18
-
$1,895 CAD
$1,349 USD
View
B
Retailer 19
-
$2,018 CAD
€1,368 EUR
View
B
Retailer 20
-
$2,217 CAD
ZAR 25,497 ZAR
View
B
Retailer 21
-
$2,332 CAD
View
B
Retailer 22
-
$2,651 CAD
£1,486 GBP
View
Most Expensive
B
NZ Jewellers
6fe8d8e1-b6e0-4a79-8df8-877dfdece077 · Oct 27
$3,512 CAD
$2,500 USD
View
Price under review
22 more retailers have this diamond
Prices start from $1,204 CADSave up to $1,447 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
$1,204 CAD