Traditionally a diamond’s quality is judged with reference to the internationally acknowledged ‘4C’ classification system. However, Rosendorff’s exacting standards go even further, delving into more the abstract measures that create the brilliant
‘Rosendorff Diamond’.

They have incorporated a fifth “C” which they
call charisma, which is an aura or presence, the
“je ne sais quoi”, that undefinable “something”
which makes the stone worthy of being considered
a Rosendorff diamond.