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Marquise|Natural|GIA

1.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 1555018794

Certificate GIA 1555018794

Diamond specifications and retailer prices

From $10,462 CAD
As of November 5, 2026
Save $3,886 CAD (27%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $18,921 CAD at MOH London · As of October 8, 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 1555018794. Listed at 14 retailers as of November 5, 2026, with a 37% 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

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

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.86°
Pavilion angle38.01°
OriginNatural
Grading LabGIA
CertificateGIA 1555018794
Dimensions11.54 × 6.02 × 3.54 mm
L/W Ratio1.92
Girdle conditionVery Thick
Key to symbols
Feather, Twinning Wisp, Cloud
Top View
11.54 mm6.02 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555018794
Side View
Table 60.0%Crown 35.86°Girdle: THK-VTKPavilion 38.01°Culet: NoneDepth 58.9%

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 5
Current: $18,921 CAD|Low: $9,804 CAD|High: $18,921 CAD|Avg: $13,146 CAD
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
November 6, 2026
Retailer 13$10,531 CAD
Retailer 7$10,784 CAD
Retailer 4$11,049 CAD
Retailer 11$11,341 CAD
Retailer 3$11,986 CAD
Retailer 12$12,477 CAD
Retailer 6$13,204 CAD
Retailer 8$13,626 CAD
Retailer 2$13,892 CAD
Retailer 5$14,349 CAD
Retailer 9$14,809 CAD
Retailer 10$16,034 CAD
MOH London$18,921 CAD

42 data points across 13 retailers

14 retailers$10,462 CAD to $14,349 CAD

B+
Cheapest Retailer
-
$10,462 CAD
B
Retailer 2
-
$10,784 CAD
View
Final sale: no returns
B
Retailer 3
-
$10,828 CAD
View
B
Retailer 4
-
$11,049 CAD
View
Retailer 5
-
$11,249 CAD
View
Price last confirmed 29 days ago
B
Retailer 6
-
$12,477 CAD
View
B
Retailer 7
-
$12,922 CAD
View
B
Retailer 8
-
$13,204 CAD
View
B
Retailer 9
-
$13,626 CAD
View
B
Retailer 10
-
$13,892 CAD
View
Retailer 11
-
$14,060 CAD
View
Price last confirmed 61 days ago
B
Retailer 12
-
$14,349 CAD
View
Retailer 13
-
$14,809 CAD
View
Price last confirmed 29 days ago
Most Expensive
MOH London
452DDEF94 · Oct 8
$18,921 CAD
£10,592 GBP
View
Price last confirmed 29 days ago
13 more retailers have this diamond
Prices start from $10,462 CADSave up to $3,886 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
$10,462 CAD