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Marquise|Natural|GIA

1.23ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 1549965780

Certificate GIA 1549965780

Diamond specifications and retailer prices

From $8,085 CAD
As of November 6, 2026
Save $5,582 CAD (41%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $13,668 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 1549965780. Listed at 9 retailers as of November 4, 2026, with prices from $8,085 to $13,668, a $5,582 spread on the same certified stone. MOH London lists it at $13,668. 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
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1549965780
Dimensions12.23 × 5.23 × 3.32 mm
L/W Ratio2.34
Key to symbols
Twinning Wisp, Feather, Crystal, Needle, Indented Natural
Top View
12.23 mm5.23 mm1.23 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 1549965780
Side View
Table 57.0%CrownGirdle: MED-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 6
Current: $13,668 CAD|Low: $6,977 CAD|High: $13,869 CAD|Avg: $9,269 CAD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 4$6,999 CAD
Retailer 6$7,416 CAD
Retailer 5$8,085 CAD
Retailer 2$8,833 CAD
Retailer 7$9,122 CAD
Retailer 3$10,120 CAD
MOH London$13,668 CAD

42 data points across 7 retailers

9 retailers$8,085 CAD to $13,668 CAD

Retailer 1
-
$6,999 CAD
Price last confirmed 14 days ago
Retailer 2
-
$7,355 CAD
View
Price last confirmed 14 days ago
Retailer 3
-
$7,643 CAD
View
Price last confirmed 29 days ago
B+
Retailer 4
-
$8,085 CAD
View
B+
Retailer 5
-
$8,833 CAD
View
Retailer 6
-
$9,122 CAD
View
Price last confirmed 33 days ago
B
Retailer 7
-
$9,524 CAD
View
B
Retailer 8
-
$10,120 CAD
View
Most Expensive
B
MOH London
83C545528 · Nov 4
$13,668 CAD
£7,651 GBP
View
8 more retailers have this diamond
Prices start from $8,085 CADSave up to $5,582 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
$8,085 CAD