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1.23ct I VS1 Round Lab Grown Diamond

ID • I/VS1 • GCAL 291150189

Shape and cutting style on the report: Round brilliant

Certificate GCAL 291150189

Diamond specifications and retailer prices

From $567 CAD
$406 USD
As of November 1, 2026
Save $1,095 CAD (66%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,662 CAD at MOH London · As of November 1, 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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GCAL 291150189. Listed at 4 retailers as of November 1, 2026, with prices from $567 to $1,662, a $1,095 spread on the same certified stone. MOH London lists it at $1,662. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
I
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 291150189
Dimensions6.90 × 6.88 × 4.21 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.90 mm6.88 mm1.23 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 291150189
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.1%

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 1
Current: $1,662 CAD|Low: $504 CAD|High: $1,682 CAD|Avg: $1,064 CAD|+5.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2$567 CAD
Retailer 3$724 CAD
Retailer 4$1,384 CAD
MOH London$1,662 CAD

11 data points across 4 retailers

4 retailers$567 CAD to $1,662 CAD

A
Cheapest Retailer
-
$567 CAD
$406 USD
B+
Retailer 2
-
$724 CAD
$518 USD
View
B
Retailer 3
-
$1,384 CAD
$991 USD
View
Most Expensive
B
MOH London
291150189 · Nov 1
$1,662 CAD
£937 GBP
View
3 more retailers have this diamond
Prices start from $567 CADSave up to $1,095 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
$567 CAD