CaratHunter
Plans
Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2548810416

Certificate GIA 2548810416

Diamond specifications and retailer prices

From $11,901 CAD
SGD 11,449 SGD
As of October 28, 2026
Save $9,429 CAD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $21,330 CAD at With Clarity · As of October 29, 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 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 2548810416. Listed at 16 retailers as of October 28, 2026, with prices from $11,901 to $21,330, a $9,429 spread on the same certified stone. With Clarity lists it at $21,330. 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 angle39.57°
Pavilion angle38.28°
OriginNatural
Grading LabGIA
CertificateGIA 2548810416
Dimensions11.35 × 6.00 × 3.75 mm
L/W Ratio1.89
Top View
11.35 mm6.00 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2548810416
Side View
Table 57.0%Crown 39.57°Girdle: STK-THKPavilion 38.28°Culet: NoneDepth 62.5%

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: Oct 28
Current: $17,545 CAD|Low: $11,901 CAD|High: $21,764 CAD|Avg: $15,197 CAD|-5.9%
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
With Clarity
October 29, 2026
Retailer 9$11,901 CAD
Retailer 11$12,495 CAD
Retailer 6$12,866 CAD
Retailer 13$12,883 CAD
Retailer 8$13,097 CAD
Retailer 14$13,158 CAD
Retailer 10$13,209 CAD
Retailer 12$13,317 CAD
Retailer 7$15,202 CAD
Retailer 3$15,225 CAD
Retailer 2$15,372 CAD
Retailer 5$15,733 CAD
Retailer 1$17,545 CAD
Retailer 4$18,705 CAD
With Clarity$21,330 CAD

31 data points across 15 retailers

16 retailers$11,901 CAD to $21,330 CAD

A
Cheapest Retailer
-
$11,901 CAD
SGD 11,449 SGD
A
Retailer 2
-
$12,495 CAD
$8,895 USD
View
A
Retailer 3
-
$12,866 CAD
$9,159 USD
View
A
Retailer 4
-
$12,883 CAD
SGD 12,394 SGD
View
A
Retailer 5
-
$13,097 CAD
$9,324 USD
View
A
Retailer 6
-
$13,158 CAD
$9,367 USD
View
A
Retailer 7
-
$13,209 CAD
£7,404 GBP
View
A
Retailer 8
-
$13,317 CAD
$9,480 USD
View
B+
Retailer 9
-
$15,202 CAD
€10,307 EUR
View
B+
Retailer 10
-
$15,225 CAD
$10,838 USD
View
B+
Retailer 11
-
$15,372 CAD
$10,943 USD
View
B+
Retailer 12
-
$15,733 CAD
$11,200 USD
View
B+
Retailer 13
-
$16,484 CAD
$11,735 USD
View
B+
Retailer 14
-
$17,545 CAD
$12,490 USD
View
B+
Retailer 15
-
$18,705 CAD
$13,316 USD
View
Most Expensive
B
With Clarity
2548810416 · Oct 29
$21,330 CAD
$15,185 USD
View
15 more retailers have this diamond
Prices start from $11,901 CADSave up to $9,429 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
$11,901 CAD