11.78ct F SI1 Radiant Lab Grown Diamond
GD • F/SI1 • IGI LG726502748
Shape and cutting style on the report: Cut cornered rectangular modified brilliant
Certificate IGI LG726502748
Diamond specifications and retailer prices
About this 11.78ct lab-grown radiant diamond
This 11.78ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG726502748 or 726502748. Listed at 8 retailers as of October 28, 2026, with prices from £1,915 to £4,505, a £2,590 spread on the same certified stone. Rare Carat lists it at £4,505. 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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