0.31ct E SI1 Marquise Lab Grown Diamond
VG • E/SI1 • IGI LG841689375
Shape and cutting style on the report: Marquise brilliant
Certificate IGI LG841689375
Diamond specifications and retailer prices
About this 0.31ct lab-grown marquise diamond
This 0.31ct lab-grown marquise sits in the sub-half-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG841689375 or 841689375. Listed at 7 retailers as of October 28, 2026, with prices from $182 to $839, a $657 spread on the same certified stone. MOH London lists it at $839. 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 →7 retailers
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