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Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

VG • D/SI1 • GIA 6551666431

Certificate GIA 6551666431

Diamond specifications and retailer prices

From $10,407 CAD
As of November 5, 2026
Save $8,250 CAD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $18,657 CAD at With Clarity · As of November 4, 2026
View at With Clarity

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551666431. Listed at 14 retailers as of November 4, 2026, with prices from $10,407 to $18,657, a $8,250 spread on the same certified stone. With Clarity lists it at $18,657. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
D
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.52°
Pavilion angle39.55°
OriginNatural
Grading LabGIA
CertificateGIA 6551666431
Dimensions10.86 × 5.87 × 3.79 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.86 mm5.87 mm1.50 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551666431
Side View
Table 61.0%Crown 40.52°Girdle: VTN-VTKPavilion 39.55°Culet: NoneDepth 64.7%

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: $13,731 CAD|Low: $10,407 CAD|High: $19,428 CAD|Avg: $13,326 CAD|-6.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
November 6, 2026
Retailer 9$10,407 CAD
Retailer 10$11,021 CAD
Retailer 7$11,192 CAD
Retailer 6$11,332 CAD
Retailer 8$11,455 CAD
Retailer 11$11,613 CAD
Retailer 5$11,745 CAD
Retailer 2$13,392 CAD
Retailer 12$13,516 CAD
Retailer 1$13,731 CAD
Retailer 4$13,851 CAD
Retailer 3$16,899 CAD
With Clarity$18,657 CAD

38 data points across 13 retailers

14 retailers$10,407 CAD to $18,657 CAD

A
Cheapest Retailer
-
$10,407 CAD
A
Retailer 2
-
$11,021 CAD
View
A
Retailer 3
-
$11,192 CAD
View
A
Retailer 4
-
$11,332 CAD
View
A
Retailer 5
-
$11,455 CAD
View
A
Retailer 6
-
$11,613 CAD
View
A
Retailer 7
-
$11,745 CAD
View
B+
Retailer 8
-
$13,392 CAD
View
B+
Retailer 9
-
$13,516 CAD
View
B+
Retailer 10
-
$13,731 CAD
View
B+
Retailer 11
-
$13,851 CAD
View
B+
Retailer 12
-
$15,009 CAD
View
B+
Retailer 13
-
$16,899 CAD
View
Most Expensive
B
With Clarity
6551666431 · Nov 4
$18,657 CAD
$13,359 USD
View
13 more retailers have this diamond
Prices start from $10,407 CADSave up to $8,250 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
1.50ct Marquise
$10,407 CAD