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Marquise|Natural|GIA

1.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6565156521

Certificate GIA 6565156521

Diamond specifications and retailer prices

From $9,478 CAD
As of November 6, 2026
Save $6,571 CAD (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $16,049 CAD at MOH London · As of November 4, 2026
View at MOH London

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565156521. Listed at 14 retailers as of November 4, 2026, with prices from $9,478 to $16,049, a $6,571 spread on the same certified stone. MOH London lists it at $16,049. 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

1.50
Carat
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6565156521
Dimensions11.05 × 5.97 × 3.68 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Indented Natural, Cavity, Pinpoint, Natural
Top View
11.05 mm5.97 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6565156521
Side View
Table 58.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 61.6%

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 6
Current: $16,049 CAD|Low: $8,637 CAD|High: $16,285 CAD|Avg: $11,239 CAD|-1.3%
MOH London
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
November 6, 2026
Retailer 5$9,478 CAD
Retailer 9$9,697 CAD
Retailer 11$10,007 CAD
Retailer 8$10,620 CAD
Retailer 10$10,776 CAD
Retailer 7$10,894 CAD
Retailer 6$10,917 CAD
Retailer 12$11,160 CAD
Retailer 3$11,661 CAD
Retailer 4$11,661 CAD
Retailer 13$11,768 CAD
Retailer 14$12,040 CAD
Retailer 2$12,544 CAD
MOH London$16,049 CAD

36 data points across 14 retailers

14 retailers$9,478 CAD to $16,049 CAD

B+
Cheapest Retailer
-
$9,478 CAD
B
Retailer 2
-
$9,697 CAD
View
B
Retailer 3
-
$10,007 CAD
View
B
Retailer 4
-
$10,620 CAD
View
B
Retailer 5
-
$10,776 CAD
View
B+
Retailer 6
-
$10,894 CAD
View
B
Retailer 7
-
$10,917 CAD
View
B
Retailer 8
-
$11,160 CAD
View
B
Retailer 9
-
$11,661 CAD
View
B
Retailer 10
-
$11,661 CAD
View
B
Retailer 11
-
$11,768 CAD
View
B
Retailer 12
-
$12,040 CAD
View
B
Retailer 13
-
$12,544 CAD
View
Most Expensive
B
MOH London
33DFA88A3 · Nov 4
$16,049 CAD
£8,984 GBP
View
13 more retailers have this diamond
Prices start from $9,478 CADSave up to $6,571 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+
1.50ct Marquise
$9,478 CAD