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Marquise|Natural|GIA

1.51ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 5241109438

Certificate GIA 5241109438

Diamond specifications and retailer prices

From $4,625 CAD
As of November 4, 2026
Save $3,758 CAD (45%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,383 CAD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5241109438. Listed at 9 retailers as of November 4, 2026, with prices from $4,625 to $8,383, a $3,758 spread on the same certified stone. Wholesale Diamonds Direct lists it at $8,383. 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
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.07°
Pavilion angle40.14°
OriginNatural
Grading LabGIA
CertificateGIA 5241109438
Dimensions11.11 × 5.88 × 3.77 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.11 mm5.88 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5241109438
Side View
Table 59.0%Crown 40.07°Girdle: STK-THKPavilion 40.14°Culet: NDepth 64.2%

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 4
Current: $6,151 CAD|Low: $4,625 CAD|High: $8,383 CAD|Avg: $5,875 CAD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Wholesale Diamonds Direct
November 6, 2026
Retailer 5$4,625 CAD
Retailer 4$4,941 CAD
Retailer 7$5,047 CAD
Retailer 8$5,622 CAD
Retailer 2$5,892 CAD
Retailer 6$5,968 CAD
Retailer 1$6,151 CAD
Retailer 3$7,800 CAD
Wholesale Diamonds Direct$8,383 CAD

6 data points across 9 retailers

9 retailers$4,625 CAD to $8,383 CAD

A
Cheapest Retailer
-
$4,625 CAD
A
Retailer 2
-
$4,941 CAD
View
A
Retailer 3
-
$5,047 CAD
View
B+
Retailer 4
-
$5,622 CAD
View
B+
Retailer 5
-
$5,892 CAD
View
B+
Retailer 6
-
$5,968 CAD
View
B+
Retailer 7
-
$6,151 CAD
View
B+
Retailer 8
-
$7,800 CAD
View
Most Expensive
B+
Wholesale Diamonds Direct
668871297 · Nov 6
$8,383 CAD
$5,960 USD
View
8 more retailers have this diamond
Prices start from $4,625 CADSave up to $3,758 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
1.51ct Marquise
$4,625 CAD