Two routes to diamond
HPHT uses high-pressure, high-temperature conditions. CVD grows diamond through chemical vapour deposition. Both can produce laboratory-grown diamond; neither label alone tells you how an individual stone looks.
Read the individual evidence
Growth conditions can leave characteristic features. A report may also disclose post-growth treatment. Compare the actual stone's colour, clarity, proportions, dimensions and appearance rather than declaring one growth method universally superior.
Put the conclusion in the quotation
Confirm laboratory-grown origin, the available report details and any recorded treatments. Select the stone that meets your visual and budget priorities, supported by consistent documentation.
Sources and further reading
This English edition draws on the source material referenced below.