Stone-carving in Yerevan, Armenia; by Levon Avdoyan, 2012. 
The crosses looked like wood to me, but they are cut from tufa. 
Another view of the crosses:

Stone-carving in Yerevan, Armenia; by Levon Avdoyan, 2012. 

The crosses looked like wood to me, but they are cut from tufa

Another view of the crosses:

tufa crosses in Yerevan