In Melbourne:
“Pure” Armenian? There was an Armenian Cafe restaurant before I got together with my wife, but that’s long closed.
There’s Sezar | Modern Armenian Restaurant, which is Nouveau Armenian (Nouveau, as most upmarket ethnic restaurants in Melbourne are). We’ve been once, and it wasn’t strikingly “pure”. Pleasant, though rather heavy.
It’s next door to Armenia, and the cuisine is quite different, but I have much affection for the Georgian cuisine of the Umbrella Lounge Bar.