The QD describes the three diamonds in each hexagon as brilliants but does not say whether old cut or modern. Similarly, Munn does not distinguish either.
--Previous Message-- : When the circumstances are optimal, old rose : cut diamonds can unfold a magical splendour. : Brilliant cut diamonds however can glitter : in less optimal circumstances too because : these simply have more facettings and : possibilities to break, refract and reflect : the light. : : I am not sure if the diamonds in the : Boucheron Honeycomb Motif Diadem (the Mrs : Greville Tiara) are rose cut, but every time : I see this diadem, I am struck by the : splendour. It is surprisingly modern as : well, given the age of the design. It suits : HRH The Duchess of Cornwall very well. : : : : : :