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Marquise|Natural|GIA

1.20ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 5241088647

Certificate GIA 5241088647

Diamond specifications and retailer prices

From $6,089 CAD
As of November 5, 2026
Save $6,151 CAD (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $12,240 CAD at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-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 5241088647. Listed at 13 retailers as of November 4, 2026, with prices from $6,089 to $12,240, a $6,151 spread on the same certified stone. MOH London lists it at $12,240. 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

1.20
Carat
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5241088647
Dimensions10.42 × 5.34 × 3.39 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizeNone
Top View
10.42 mm5.34 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5241088647
Side View
Table 61.0%CrownGirdle: THK-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: Nov 5
Current: $12,240 CAD|Low: $6,089 CAD|High: $12,240 CAD|Avg: $7,904 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 11$6,089 CAD
Retailer 12$6,497 CAD
Retailer 10$6,569 CAD
Retailer 9$7,347 CAD
Retailer 13$7,389 CAD
Retailer 7$7,444 CAD
Retailer 2$7,475 CAD
Retailer 6$7,483 CAD
Retailer 3$7,821 CAD
Retailer 4$7,821 CAD
Retailer 5$8,088 CAD
Retailer 8$9,402 CAD
MOH London$12,240 CAD

3 data points across 13 retailers

13 retailers$6,089 CAD to $12,240 CAD

B+
Cheapest Retailer
-
$6,089 CAD
B+
Retailer 2
-
$6,497 CAD
View
B
Retailer 3
-
$6,569 CAD
View
B
Retailer 4
-
$7,347 CAD
View
B
Retailer 5
-
$7,389 CAD
View
B
Retailer 6
-
$7,444 CAD
View
B
Retailer 7
-
$7,475 CAD
View
B
Retailer 8
-
$7,483 CAD
View
B
Retailer 9
-
$7,821 CAD
View
B
Retailer 10
-
$7,821 CAD
View
B
Retailer 11
-
$8,088 CAD
View
B
Retailer 12
-
$9,402 CAD
View
Most Expensive
B
MOH London
BE1C044CB · Nov 4
$12,240 CAD
£6,852 GBP
View
12 more retailers have this diamond
Prices start from $6,089 CADSave up to $6,151 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+
1.20ct Marquise
$6,089 CAD