hanging painting on granite wall

[sebastien]

I would like to get some advice on hanging a framed painting (less than 50 lbs)
on a granite wall. Slabs appear to be 1-3/4in. thick and rough surfaced).

The piece now hangs on a drywall wall with triple hanging hooks with D-rings and wire loops and a security (T-screw) screw on the bottom.

My experience is limited to masonry when it comes to harder surfaces.

I imagined drilling a hole pointing down slightly with a diamond tipped bit appropriate for the substrate for each hole (3).
using plastic anchors in the holes and hanging the piece straight on the screws from the wire loops with a washer on the screw for safety.
same idea for the security T-screw on the bottom: hole, plastic anchor T-screw

Any advice would be greatly appreciated.

[T. Ashley McGrew]

This is an great question. It sounds to me like you are on the right track but to get input from more folks in a timely manner I would post this on the list serve which goes straight into over a thousand email inboxes out there in the working world. You can post there if you are signed up for the list. You can do it here - http://www.paccin.org/content.php?110-ListServ
If you don't want to sign up I can post it there for you.
Ashley