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Marquise|Natural|GIA

1.23ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6545405876

Certificate GIA 6545405876

Diamond specifications and retailer prices

From $9,098 CAD
As of November 6, 2026
Save $7,482 CAD (45%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $16,579 CAD at MOH London · As of November 4, 2026
View at MOH London

About this 1.23ct natural marquise diamond

This 1.23ct natural marquise sits in the classic one-carat band, graded D 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 6545405876. Listed at 10 retailers as of November 4, 2026, with prices from $9,098 to $16,579, a $7,482 spread on the same certified stone. MOH London lists it at $16,579. 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

1.23
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6545405876
Dimensions11.14 × 5.62 × 3.51 mm
L/W Ratio1.98
Top View
11.14 mm5.62 mm1.23 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6545405876
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $16,579 CAD|Low: $8,932 CAD|High: $17,271 CAD|Avg: $11,454 CAD|-4.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$9,098 CAD
Retailer 8$9,430 CAD
Retailer 4$9,825 CAD
Retailer 5$9,862 CAD
Retailer 2$11,109 CAD
Retailer 6$11,485 CAD
Retailer 9$12,102 CAD
Retailer 3$12,980 CAD
MOH London$16,579 CAD

40 data points across 9 retailers

10 retailers$9,098 CAD to $16,579 CAD

B+
Cheapest Retailer
-
$9,098 CAD
B+
Retailer 2
-
$9,378 CAD
View
B+
Retailer 3
-
$9,430 CAD
View
B
Retailer 4
-
$9,825 CAD
View
Final sale: no returns
B
Retailer 5
-
$9,862 CAD
View
B
Retailer 6
-
$11,109 CAD
View
B
Retailer 7
-
$11,485 CAD
View
B
Retailer 8
-
$12,102 CAD
View
B
Retailer 9
-
$12,980 CAD
View
Most Expensive
B
MOH London
98A34FD36 · Nov 4
$16,579 CAD
£9,281 GBP
View
9 more retailers have this diamond
Prices start from $9,098 CADSave up to $7,482 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+
1.23ct Marquise
$9,098 CAD