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Round|Natural|GIA

1.23ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6345619250

Certificate GIA 6345619250

Diamond specifications and retailer prices

From $7,863 CAD
As of November 1, 2026
Save $5,442 CAD (41%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $13,304 CAD at MOH London · As of November 4, 2026
View at MOH London

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6345619250. Listed at 8 retailers as of November 1, 2026, with prices from $7,863 to $13,304, a $5,442 spread on the same certified stone. MOH London lists it at $13,304. 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
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6345619250
Dimensions6.86 × 6.81 × 4.26 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.86 mm6.81 mm1.23 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6345619250
Side View
Table 57.0%Crown 36°Girdle: ThickPavilion 41°Culet: NoneDepth 62.3%

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 1
Current: $13,304 CAD|Low: $7,705 CAD|High: $13,501 CAD|Avg: $9,524 CAD|+2.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 4$7,863 CAD
Retailer 8$7,896 CAD
Retailer 6$8,095 CAD
Retailer 9$8,663 CAD
Retailer 5$8,951 CAD
Retailer 7$9,054 CAD
Retailer 2$9,836 CAD
Retailer 10$10,596 CAD
Retailer 3$11,047 CAD
MOH London$13,304 CAD

37 data points across 10 retailers

8 retailers$7,863 CAD to $13,304 CAD

B+
Cheapest Retailer
-
$7,863 CAD
B+
Retailer 2
-
$7,896 CAD
View
B+
Retailer 3
-
$8,095 CAD
View
Retailer 4
-
$8,951 CAD
View
Price last confirmed 28 days ago
Retailer 5
-
$9,054 CAD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$9,836 CAD
View
B
Retailer 7
-
$11,047 CAD
View
Most Expensive
B
MOH London
F721B937A · Nov 4
$13,304 CAD
£7,501 GBP
View
7 more retailers have this diamond
Prices start from $7,863 CADSave up to $5,442 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 Round
$7,863 CAD