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Cushion|Lab Grown|IGI

1.09ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG851679099

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG851679099

Diamond specifications and retailer prices

From $459 CAD
£257 GBP
As of November 6, 2026
1 retailer carries this diamond
Only listing: $459 CAD at 77 Diamonds
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at 77 Diamonds

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion 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 IGI LG851679099 or 851679099. Listed at a single retailer as of November 6, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.09
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851679099
Dimensions6.00 × 6.00 × 4.01 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.00 mm6.00 mm1.09 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851679099
Side View
Table 61.0%Crown 35.2°Girdle: STK-THKPavilion 40°Culet: NoneDepth 66.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: $459 CAD|Low: $459 CAD|High: $459 CAD|Avg: $459 CAD
November 6, 2026
77 Diamonds$459 CAD

1 data point across 1 retailer

1 retailer

B+
77 Diamonds
CUSTVSGCWJ7JTN · Nov 6
$459 CAD
£257 GBP
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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+
1.09ct Cushion
$459 CAD