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Marquise|Natural|GIA

1.51ct F SI1 Marquise Natural Diamond

ID • F/SI1 • GIA 6541161911

Certificate GIA 6541161911

Diamond specifications and retailer prices

From $16,741 CAD
$11,980 USD
As of November 1, 2026
Save $4,597 CAD (22%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $21,338 CAD at Jared · As of November 2, 2026
View at Jared

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541161911. Listed at 6 retailers as of November 1, 2026, with prices from $16,741 to $21,338, a $4,597 spread on the same certified stone. Jared lists it at $21,338. 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
F
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.62°
Pavilion angle41.26°
OriginNatural
Grading LabGIA
CertificateGIA 6541161911
Dimensions11.26 × 5.97 × 3.79 mm
L/W Ratio1.89
Top View
11.26 mm5.97 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6541161911
Side View
Table 65.0%Crown 37.62°Girdle: ThickPavilion 41.26°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $20,768 CAD|Low: $15,842 CAD|High: $20,903 CAD|Avg: $18,847 CAD|+0.7%
Retailer 1
Retailer 2
October 31, 2026
Retailer 2$17,427 CAD
Retailer 1$20,768 CAD

37 data points across 2 retailers

6 retailers$16,741 CAD to $21,338 CAD

B+
Cheapest Retailer
-
$16,741 CAD
$11,980 USD
B+
Retailer 2
-
$17,427 CAD
$12,471 USD
View
Final sale: no returns
B
Retailer 3
-
$20,654 CAD
$14,780 USD
View
B
Retailer 4
-
$20,654 CAD
$14,780 USD
View
B
Retailer 5
-
$20,768 CAD
£11,702 GBP
View
Most Expensive
B
Jared
157862417 · Nov 2
$21,338 CAD
$15,270 USD
View
5 more retailers have this diamond
Prices start from $16,741 CADSave up to $4,597 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
$16,741 CAD