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Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2547653720

Certificate GIA 2547653720

Diamond specifications and retailer prices

From $10,072 CAD
$7,210 USD
As of November 1, 2026
Save $8,293 CAD (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $18,365 CAD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2547653720. Listed at 12 retailers as of November 1, 2026, with prices from $10,072 to $18,365, a $8,293 spread on the same certified stone. MOH London lists it at $18,365. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2547653720
Dimensions10.55 × 5.97 × 3.75 mm
L/W Ratio1.77
Top View
10.55 mm5.97 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2547653720
Side View
Table 57.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 62.8%

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: Nov 1
Current: $18,365 CAD|Low: $10,072 CAD|High: $18,585 CAD|Avg: $13,529 CAD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 6$10,072 CAD
Retailer 8$10,424 CAD
Retailer 9$11,833 CAD
Retailer 5$12,197 CAD
Retailer 7$12,424 CAD
Retailer 11$12,600 CAD
Retailer 12$12,600 CAD
Retailer 3$13,019 CAD
Retailer 2$14,396 CAD
Retailer 10$14,510 CAD
Retailer 4$16,557 CAD
MOH London$18,365 CAD

32 data points across 12 retailers

12 retailers$10,072 CAD to $18,365 CAD

B+
Cheapest Retailer
-
$10,072 CAD
$7,210 USD
B+
Retailer 2
-
$10,424 CAD
$7,462 USD
View
B
Retailer 3
-
$11,833 CAD
$8,471 USD
View
B+
Retailer 4
-
$12,197 CAD
£6,875 GBP
View
Retailer 5
-
$12,424 CAD
A$13,683 AUD
View
Price last confirmed 9 days ago
B
Retailer 6
-
$12,600 CAD
$9,020 USD
View
B
Retailer 7
-
$12,600 CAD
$9,020 USD
View
B
Retailer 8
-
$13,019 CAD
$9,320 USD
View
B
Retailer 9
-
$13,181 CAD
$9,436 USD
View
B
Retailer 10
-
$14,396 CAD
€9,815 EUR
View
Retailer 11
-
$14,510 CAD
$10,387 USD
View
Price last confirmed 18 days ago
Most Expensive
B
MOH London
05593552D · Nov 1
$18,365 CAD
£10,352 GBP
View
11 more retailers have this diamond
Prices start from $10,072 CADSave up to $8,293 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
$10,072 CAD