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1.26ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG845673312

Shape and cutting style on the report: Round brilliant

Certificate IGI LG845673312

Diamond specifications and retailer prices

From $258 CAD
As of November 6, 2026
Save $621 CAD (71%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $880 CAD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.26ct lab-grown round diamond

This 1.26ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG845673312 or 845673312. Listed at 3 retailers as of November 5, 2026, with prices from $258 to $880, a $621 spread on the same certified stone. Brilliant Earth lists it at $880. 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

1.26
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845673312
Dimensions6.84 × 6.91 × 4.35 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.84 mm6.91 mm1.26 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845673312
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 63.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $880 CAD|Low: $258 CAD|High: $1,285 CAD|Avg: $673 CAD|-31.5%
Brilliant Earth
Retailer 2
Retailer 3
November 6, 2026
Retailer 3$258 CAD
Retailer 2$517 CAD
Brilliant Earth$880 CAD

17 data points across 3 retailers

3 retailers$258 CAD to $880 CAD

A
Cheapest Retailer
-
$258 CAD
Final sale: no returns
A
Retailer 2
-
$517 CAD
View
Most Expensive
B+
Brilliant Earth
22211733A · Nov 5
$880 CAD
$630 USD
View
2 more retailers have this diamond
Prices start from $258 CADSave up to $621 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
1.26ct Round
$258 CAD