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Cushion|Lab Grown|IGI

3.11ct H SI1 Cushion Lab Grown Diamond

GD • H/SI1

Diamond specifications and retailer prices

From €2,037 EUR
CA$3,174 CAD
As of November 2, 2026
2 retailers carry this diamond
Most expensive: €2,037 EUR at Diamond Exchange Canada
View at Diamond Exchange Canada

About this 3.11ct lab-grown cushion diamond

This 3.11ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI. Listed at 2 retailers as of November 2, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.11
Carat
H
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions8.37 × 8.31 × 5.75 mm
L/W Ratio1.01
Top View
8.37 mm8.31 mm3.11 ctH / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth

Caratlytics Score

How it works →
C
Average
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Price History

Last verified: Nov 2
Current: €2,037 EUR|Low: €851 EUR|High: €2,037 EUR|Avg: €1,444 EUR
Diamond Exchange Canada
Retailer 2
October 1, 2026
Retailer 2€851 EUR
Diamond Exchange Canada€2,037 EUR

2 data points across 2 retailers

2 retailers

Retailer 1
-
€851 EUR
$955 USD
Price last confirmed 12 days ago
Most Expensive
C
Diamond Exchange Canada
1986483783 · Nov 2
€2,037 EUR
CA$3,174 CAD
View
1 more retailer has this diamond

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.

C
3.11ct Cushion
€2,037 EUR