0.40ct D SI1 Cushion Lab Grown Diamond
ID • D/SI1 • IGI LG670407959
Shape and cutting style on the report: Cushion modified brilliant
Certificate IGI LG670407959
Diamond specifications and retailer prices
About this 0.4ct lab-grown cushion diamond
This 0.4ct lab-grown cushion sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG670407959 or 670407959. Listed at 10 retailers as of October 16, 2026. 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
Specifications
Caratlytics Score
10 retailers
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