Marquise|Natural|GIA

1.51ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 5563584318

Certificate GIA 5563584318

Diamond specifications and retailer prices

From $11,525 CAD
$8,250 USD
As of October 24, 2026
Save $2,292 CAD (17%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $15,439 CAD at Diamonds Direct · As of October 23, 2026
View at Diamonds Direct

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two 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 5563584318. Listed at 10 retailers as of October 23, 2026, with a relatively tight 20% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.51
Carat
E
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.86°
Pavilion angle39.45°
OriginNatural
Grading LabGIA
CertificateGIA 5563584318
Dimensions11.39 × 5.94 × 3.74 mm
L/W Ratio1.92
Culet sizeNone
Top View
11.39 mm5.94 mm1.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5563584318
Side View
Table 58.0%Crown 39.86°Girdle: STK-THKPavilion 39.45°Culet: NDepth 63.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 24
Current: $15,439 CAD|Low: $11,308 CAD|High: $15,439 CAD|Avg: $12,577 CAD
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 24, 2026
Retailer 5$11,308 CAD
Retailer 10$11,309 CAD
Retailer 6$11,525 CAD
Retailer 8$11,682 CAD
Retailer 2$11,958 CAD
Retailer 9$13,469 CAD
Retailer 7$13,595 CAD
Retailer 3$13,796 CAD
Retailer 4$13,817 CAD
Diamonds Direct$15,439 CAD

11 data points across 10 retailers

10 retailers$11,525 CAD to $13,817 CAD

Retailer 1
-
$11,308 CAD
$8,095 USD
Price last confirmed 12 days ago
Retailer 2
-
$11,309 CAD
$8,096 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$11,525 CAD
$8,250 USD
View
Retailer 4
-
$11,682 CAD
$8,363 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$11,958 CAD
£6,740 GBP
View
B+
Retailer 6
-
$13,469 CAD
$9,642 USD
View
B+
Retailer 7
-
$13,595 CAD
$9,732 USD
View
Retailer 8
-
$13,796 CAD
€9,406 EUR
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$13,817 CAD
$9,891 USD
View
Most Expensive
Diamonds Direct
1139965 · Oct 23
$15,439 CAD
$11,052 USD
View
Price last confirmed 7 days ago
9 more retailers have this diamond
Prices start from $11,525 CADSave up to $2,292 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
1.51ct Marquise
$11,525 CAD