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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1558211257

Certificate GIA 1558211257

Diamond specifications and retailer prices

From $17,875 CAD
$12,796 USD
As of October 30, 2026
Save $11,217 CAD (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $29,092 CAD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded E 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 1558211257. Listed at 13 retailers as of October 30, 2026, with prices from $17,875 to $29,092, a $11,217 spread on the same certified stone. NZ Jewellers lists it at $29,092. 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558211257
Dimensions11.60 × 5.94 × 3.77 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Indented Natural, Knot, Natural
Top View
11.60 mm5.94 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558211257
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.5%

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: Oct 30
Current: $19,588 CAD|Low: $14,727 CAD|High: $27,588 CAD|Avg: $20,118 CAD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 6$14,727 CAD
Retailer 4$17,866 CAD
Retailer 13$17,875 CAD
Retailer 7$18,304 CAD
Retailer 12$18,463 CAD
Retailer 2$18,631 CAD
Retailer 11$18,735 CAD
Retailer 5$18,910 CAD
Retailer 14$18,921 CAD
Retailer 1$19,588 CAD
Retailer 3$21,145 CAD
Retailer 15$21,676 CAD
Retailer 9$21,957 CAD
Retailer 10$25,507 CAD
Retailer 8$27,406 CAD

37 data points across 15 retailers

13 retailers$17,875 CAD to $29,092 CAD

B+
Cheapest Retailer
-
$17,875 CAD
$12,796 USD
B
Retailer 2
-
$18,463 CAD
$13,217 USD
View
Final sale: no returns
B+
Retailer 3
-
$18,631 CAD
$13,337 USD
View
B+
Retailer 4
-
$18,735 CAD
A$20,633 AUD
View
B+
Retailer 5
-
$18,921 CAD
$13,545 USD
View
B+
Retailer 6
-
$19,588 CAD
£11,041 GBP
View
B+
Retailer 7
-
$20,551 CAD
$14,712 USD
View
B
Retailer 8
-
$20,872 CAD
$14,942 USD
View
B
Retailer 9
-
$21,676 CAD
$15,517 USD
View
B
Retailer 10
-
$21,957 CAD
€14,970 EUR
View
B
Retailer 11
-
$25,507 CAD
ZAR 294,993 ZAR
View
B
Retailer 12
-
$27,406 CAD
£15,448 GBP
View
Most Expensive
B
NZ Jewellers
c4c34995-0942-4c95-a076-5438e9cfa13b · Oct 30
$29,092 CAD
$20,826 USD
View
12 more retailers have this diamond
Prices start from $17,875 CADSave up to $11,217 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
$17,875 CAD