updated 08/03/2012 AT 7:00 PM ET
•originally published 08/06/2012 AT 9:30 AM ET
“I had no input,” she tells Marie Claire in the September issue cover story, of her 18-karat Neil Lane bauble, hand-cut in the late 1800s.
“I saw it online at one point and thought it was really pretty. I just love that it’s old and has a story. And I’m happy because it doesn’t look like anything else I wear.”
Cyrus, 19 – whose engagement was announced by PEOPLE on June 6 – has no reservations about her decision to tie the knot, but notes that she isn’t walking down the aisle soon.