3.91ct F SI2 Cushion Lab Grown Diamond
GD • F/SI2 • IGI LG675529513
Shape and cutting style on the report: Cushion brilliant
Certificate IGI LG675529513
Diamond specifications and retailer prices
About this 3.91ct lab-grown cushion diamond
This 3.91ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by IGI LG675529513 or 675529513. Listed at 8 retailers as of November 1, 2026, with prices from $427 to $2,525, a $2,098 spread on the same certified stone. Rare Carat lists it at $2,525. 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
Specifications
Caratlytics Score
How it works →8 retailers
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