The father had his son's body exhumed and cremated before sending the ashes off to Switzerland so they could be compressed into the gemstone.
The young son, killed in a car crash earlier this year, had already been buried in his hometown of Treviso, in northern Italy, when his 55-year-old dad came up with the idea.
Remembrance diamonds' are created by filtering and refining the carbon found in cremated ashes, then secured in a chamber, where intense pressure and a temperature similar to that of a volcano are applied, creating a synthetic diamond, 'The Local' reported.
The father recently received the synthetic 'Remembrance Diamond' after an eight-month weight.