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Round|Lab Grown|GIA

1.23ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 6452332073

Certificate GIA 6452332073

Diamond specifications and retailer prices

From $366 CAD
As of November 4, 2026
Save $1,255 CAD (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,621 CAD at MOH London · As of November 5, 2026
View at MOH London

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6452332073. Listed at 17 retailers as of November 4, 2026, with prices from $366 to $1,621, a $1,255 spread on the same certified stone. MOH London lists it at $1,621. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 6452332073
Dimensions6.89 × 6.85 × 4.25 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Top View
6.89 mm6.85 mm1.23 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6452332073
Side View
Table 55.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,621 CAD|Low: $366 CAD|High: $1,669 CAD|Avg: $819 CAD|-2.9%
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 8$366 CAD
Retailer 13$447 CAD
Retailer 2$649 CAD
Retailer 11$677 CAD
Retailer 6$679 CAD
Retailer 9$686 CAD
Retailer 3$705 CAD
Retailer 5$744 CAD
Retailer 7$796 CAD
Retailer 12$814 CAD
Retailer 10$1,075 CAD
Retailer 4$1,089 CAD
MOH London$1,621 CAD

44 data points across 13 retailers

17 retailers$366 CAD to $1,621 CAD

Retailer 1
-
$330 CAD
Price last confirmed 27 days ago
A
Retailer 2
-
$366 CAD
View
Final sale: no returns
Retailer 3
-
$383 CAD
View
Price last confirmed 24 days ago
Retailer 4
-
$409 CAD
View
Price last confirmed 35 days ago
A
Retailer 5
-
$447 CAD
View
B+
Retailer 6
-
$649 CAD
View
B+
Retailer 7
-
$677 CAD
View
B+
Retailer 8
-
$679 CAD
View
B+
Retailer 9
-
$686 CAD
View
Retailer 10
-
$705 CAD
View
Price last confirmed 16 days ago
Retailer 11
-
$744 CAD
View
Price last confirmed 11 days ago
B+
Retailer 12
-
$796 CAD
View
B+
Retailer 13
-
$814 CAD
View
B
Retailer 14
-
$1,075 CAD
View
Retailer 15
-
$1,089 CAD
View
Price last confirmed 27 days ago
Retailer 16
-
$1,314 CAD
View
Price last confirmed 34 days ago
Most Expensive
B
MOH London
6452332073 · Nov 5
$1,621 CAD
£914 GBP
View
16 more retailers have this diamond
Prices start from $366 CADSave up to $1,255 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.

A
1.23ct Round
$366 CAD