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Marquise|Natural|GIA

1.23ct F SI1 Marquise Natural Diamond

GD • F/SI1 • GIA 2125061627

Certificate GIA 2125061627

Diamond specifications and retailer prices

From $11,849 CAD
As of November 6, 2026
Save $2,110 CAD (15%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $17,832 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 F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2125061627. Listed at 5 retailers as of November 3, 2026, with a relatively tight 18% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
F
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2125061627
Dimensions11.28 × 5.26 × 3.67 mm
L/W Ratio2.14
Top View
11.28 mm5.26 mm1.23 ctF / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 2125061627
Side View
Table 50.0%CrownGirdlePavilionCuletDepth 69.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $17,832 CAD|Low: $11,848 CAD|High: $18,094 CAD|Avg: $14,052 CAD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$11,849 CAD
Retailer 4$12,087 CAD
Retailer 3$13,959 CAD
Retailer 5$14,126 CAD
MOH London$17,832 CAD

45 data points across 5 retailers

5 retailers$11,849 CAD to $13,959 CAD

B
Cheapest Retailer
-
$11,849 CAD
Retailer 2
-
$12,087 CAD
View
Price last confirmed 15 days ago
C
Retailer 3
-
$13,959 CAD
View
Retailer 4
-
$14,126 CAD
View
Price last confirmed 15 days ago
Most Expensive
MOH London
8447EB51D · Nov 4
$17,832 CAD
£9,982 GBP
View
Price under review
4 more retailers have this diamond
Prices start from $11,849 CADSave up to $2,110 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
$11,849 CAD