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Marquise|Natural|GIA

1.51ct H SI1 Marquise Natural Diamond

ID • H/SI1 • GIA 2567421638

Certificate GIA 2567421638

Diamond specifications and retailer prices

From $10,087 CAD
As of November 6, 2026
Save $7,886 CAD (44%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $17,973 CAD at MOH London · As of November 4, 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 H 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 2567421638. Listed at 7 retailers as of November 4, 2026, with prices from $10,087 to $17,973, a $7,886 spread on the same certified stone. MOH London lists it at $17,973. 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
H
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2567421638
Dimensions11.70 × 6.15 × 3.57 mm
L/W Ratio1.90
Culet sizeNone
Top View
11.70 mm6.15 mm1.51 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2567421638
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NDepth 58.0%

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 6
Current: $17,973 CAD|Low: $10,399 CAD|High: $17,973 CAD|Avg: $12,297 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4$10,399 CAD
Retailer 5$10,644 CAD
Retailer 6$11,121 CAD
Retailer 2$11,945 CAD
Retailer 3$12,816 CAD
MOH London$17,973 CAD

4 data points across 6 retailers

7 retailers$10,087 CAD to $17,973 CAD

B+
Cheapest Retailer
-
$10,087 CAD
B+
Retailer 2
-
$10,399 CAD
View
B+
Retailer 3
-
$10,644 CAD
View
B+
Retailer 4
-
$11,121 CAD
View
B+
Retailer 5
-
$11,945 CAD
View
B
Retailer 6
-
$12,816 CAD
View
Most Expensive
B
MOH London
F14C0F569 · Nov 4
$17,973 CAD
£10,061 GBP
View
6 more retailers have this diamond
Prices start from $10,087 CADSave up to $7,886 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
$10,087 CAD