Hope you like this little research and compilation I've made about the PO badge with Diamonds.
These are ones I could find so far:
Flugzeugführer- und Beobachterabzeichen in Gold mit Brillanten
Admiral Miklós Horthy
Photo moments before the awarding of the badge to Admiral Horthy, by Goring himself.
His badge was sold at Hermman Historica.
Generalmajor Dietrich Peltz
The badge awarded to Peltz, shown at Ritterkreuz.eu
Generalfeldmarschall Erhard Milch
Both pares of Milch's badges with Diamonds.
Major Erich Hartmann
Erich Hartmann, his wife Ursula and his daughter Ursula Isabel looking at his Knights Cross and Pilot’s badge.
Generaloberst Otto Deßloch
His badge can be seen here.
And, also his other badge, without the swastika.
General der Flieger Friedrich Christiansen
During his award ceremony, the badge can be seen here.
His badge was sold at Hermann Historica.
Reichmarshall Hermann Goering
During, in 1945 when he surrendered. His badge with Diamonds, visible.
Photo when it was in Eric Campion's collection.
Generalfeldmarshall Hugo Sperlle
His badge was recently sold at Hermann Historica.
Oberst Werner Molders
Udet and Molders; he's wearing the badge.
SS-Obersturmbannführer Otto Skorzeny
His badge with Diamonds and medals, on the day of his funeral.
Oberst Hans Ulrich Rudel
Rudel and his badge.
Oberst Werner Baumbach
Oberst Baumbach wearing his badge, alongside Goering.
Baumbach badge is shown at Ritterkreuz.eu
And now, some interesting photos of the badge being worn. I still haven't found photos of these, yet:
A rare photo of this badge being wear by Donitz.
I hope you enjoyed it