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Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

GD • G/SI1 • GIA 6561587509

Certificate GIA 6561587509

Diamond specifications and retailer prices

From $10,873 CAD
As of November 4, 2026
Save $8,617 CAD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $19,490 CAD at With Clarity · As of November 6, 2026
View at With Clarity

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6561587509. Listed at 13 retailers as of November 4, 2026, with prices from $10,873 to $19,490, a $8,617 spread on the same certified stone. With Clarity lists it at $19,490. 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

1.51
Carat
G
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.81°
Pavilion angle40.54°
OriginNatural
Grading LabGIA
CertificateGIA 6561587509
Dimensions10.64 × 5.84 × 3.94 mm
L/W Ratio1.82
Culet sizeNone
Top View
10.64 mm5.84 mm1.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561587509
Side View
Table 61.0%Crown 43.81°Girdle: VTN-VTKPavilion 40.54°Culet: NoneDepth 67.5%

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 4
Current: $12,228 CAD|Low: $10,873 CAD|High: $19,490 CAD|Avg: $13,249 CAD|-18.3%
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 4$10,873 CAD
Retailer 11$11,512 CAD
Retailer 10$11,967 CAD
Retailer 2$12,132 CAD
Retailer 1$12,228 CAD
Retailer 6$12,267 CAD
Retailer 12$12,280 CAD
Retailer 3$13,966 CAD
Retailer 7$14,098 CAD
Retailer 5$14,343 CAD
Retailer 8$14,360 CAD
Retailer 9$17,654 CAD
With Clarity$19,490 CAD

8 data points across 13 retailers

13 retailers$10,873 CAD to $19,490 CAD

B+
Cheapest Retailer
-
$10,873 CAD
B+
Retailer 2
-
$11,512 CAD
View
B+
Retailer 3
-
$11,967 CAD
View
B+
Retailer 4
-
$12,132 CAD
View
B+
Retailer 5
-
$12,228 CAD
View
B+
Retailer 6
-
$12,267 CAD
View
B+
Retailer 7
-
$12,280 CAD
View
B
Retailer 8
-
$13,966 CAD
View
B
Retailer 9
-
$14,098 CAD
View
B
Retailer 10
-
$14,343 CAD
View
B
Retailer 11
-
$14,360 CAD
View
B
Retailer 12
-
$17,654 CAD
View
Most Expensive
B
With Clarity
6561587509 · Nov 6
$19,490 CAD
$13,856 USD
View
12 more retailers have this diamond
Prices start from $10,873 CADSave up to $8,617 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+
1.51ct Marquise
$10,873 CAD