4.21ct D IF Oval Lab Grown Diamond
ID • D/IF • GIA 6522350134
Certificate GIA 6522350134
Diamond specifications and retailer prices
About this 4.21ct lab-grown oval diamond
This 4.21ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6522350134. Listed at 6 retailers as of October 29, 2026, with prices from £6,132 to £15,419, a £9,287 spread on the same certified stone. Brilliant Earth lists it at £15,419. 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 →6 retailers
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