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Round|Lab Grown|IGI

1.23ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG759507271

Shape and cutting style on the report: Round brilliant

Certificate IGI LG759507271

Diamond specifications and retailer prices

From $275 CAD
As of November 5, 2026
Save $1,378 CAD (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,653 CAD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

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 IGI LG759507271 or 759507271. Listed at 21 retailers as of November 4, 2026, with prices from $275 to $1,653, a $1,378 spread on the same certified stone. Reve Diamonds lists it at $1,653. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG759507271
Dimensions6.91 × 6.88 × 4.21 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.91 mm6.88 mm1.23 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG759507271
Side View
Table 60.0%Crown 33.7°Girdle: MediumPavilion 41.4°Culet: NoneDepth 61.0%

Caratlytics Score

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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 5
Current: $612 CAD|Low: $272 CAD|High: $1,653 CAD|Avg: $756 CAD|+3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Reve Diamonds
November 6, 2026
Retailer 7$275 CAD
Retailer 5$307 CAD
Retailer 15$318 CAD
Retailer 2$341 CAD
Retailer 3$341 CAD
Retailer 4$592 CAD
Retailer 1$612 CAD
Retailer 13$651 CAD
Retailer 9$669 CAD
Retailer 16$684 CAD
Retailer 14$733 CAD
Retailer 10$908 CAD
Retailer 8$1,096 CAD
Retailer 12$1,099 CAD
Retailer 6$1,170 CAD
Retailer 11$1,588 CAD
Reve Diamonds$1,653 CAD

34 data points across 17 retailers

21 retailers$275 CAD to $1,653 CAD

A
Cheapest Retailer
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$275 CAD
A
Retailer 2
-
$307 CAD
View
Final sale: no returns
A
Retailer 3
-
$318 CAD
View
Retailer 4
-
$341 CAD
View
Price last confirmed 12 days ago
A
Retailer 5
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$341 CAD
View
B+
Retailer 6
-
$556 CAD
View
B+
Retailer 7
-
$592 CAD
View
B+
Retailer 8
-
$612 CAD
View
B+
Retailer 9
-
$651 CAD
View
B+
Retailer 10
-
$669 CAD
View
B+
Retailer 11
-
$684 CAD
View
B+
Retailer 12
-
$684 CAD
View
B+
Retailer 13
-
$733 CAD
View
B
Retailer 14
-
$908 CAD
View
B
Retailer 15
-
$932 CAD
View
Retailer 16
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$1,087 CAD
View
Price last confirmed 46 days ago
B
Retailer 17
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$1,096 CAD
View
B
Retailer 18
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$1,099 CAD
View
B
Retailer 19
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$1,170 CAD
View
B
Retailer 20
-
$1,588 CAD
View
Most Expensive
B
Reve Diamonds
932605E8E · Nov 4
$1,653 CAD
$1,183 USD
View
20 more retailers have this diamond
Prices start from $275 CADSave up to $1,378 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
$275 CAD