6.59ct F FL Cushion Lab Grown Diamond
ID • F/FL • GIA 6511403228
Certificate GIA 6511403228
Diamond specifications and retailer prices
About this 6.59ct lab-grown cushion diamond
This 6.59ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6511403228. Listed at 2 retailers as of October 31, 2026, with prices from €26,765 to €41,573, a €14,808 spread on the same certified stone. Blue Nile lists it at €41,573. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.
The 4Cs
Specifications
Caratlytics Score
How it works →2 retailers
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