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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2235531407

Certificate GIA 2235531407

Diamond specifications and retailer prices

From $15,368 CAD
$10,980 USD
As of October 29, 2026
Save $5,388 CAD (26%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $20,756 CAD at Jared · As of October 28, 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 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 2235531407. Listed at 9 retailers as of October 28, 2026, with prices from $15,368 to $20,756, a $5,388 spread on the same certified stone. Jared lists it at $20,756. 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
Crown angle37.42°
Pavilion angle38.95°
OriginNatural
Grading LabGIA
CertificateGIA 2235531407
Dimensions11.98 × 5.83 × 3.61 mm
L/W Ratio2.05
Culet sizeNone
Top View
11.98 mm5.83 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2235531407
Side View
Table 57.0%Crown 37.42°Girdle: VTN-THKPavilion 38.95°Culet: NoneDepth 61.9%

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 29
Current: $20,756 CAD|Low: $15,176 CAD|High: $20,756 CAD|Avg: $18,212 CAD
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 3$15,256 CAD
Retailer 5$15,368 CAD
Retailer 8$16,696 CAD
Retailer 4$16,878 CAD
Retailer 7$19,205 CAD
Retailer 2$20,056 CAD
Retailer 6$20,084 CAD
Retailer 9$20,084 CAD
Jared$20,756 CAD

36 data points across 9 retailers

9 retailers$15,368 CAD to $20,756 CAD

B+
Cheapest Retailer
-
$15,368 CAD
$10,980 USD
B+
Retailer 2
-
$16,437 CAD
A$18,068 AUD
View
B+
Retailer 3
-
$16,696 CAD
$11,929 USD
View
B+
Retailer 4
-
$16,878 CAD
$12,059 USD
View
Final sale: no returns
B
Retailer 5
-
$19,205 CAD
$13,722 USD
View
B+
Retailer 6
-
$20,056 CAD
£11,283 GBP
View
B
Retailer 7
-
$20,084 CAD
$14,350 USD
View
B
Retailer 8
-
$20,084 CAD
$14,350 USD
View
Most Expensive
B
Jared
155487273 · Oct 28
$20,756 CAD
$14,830 USD
View
8 more retailers have this diamond
Prices start from $15,368 CADSave up to $5,388 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
$15,368 CAD