Hi fmc,
The man that manufacturers these (Templestone Fireplaces, Co Waterford) says that he imports the marble powder and then custom makes these casts to whatever shape or colour you want - they look like a solid marble fireplace from the front and its only when you look behind do you realise that it is a cast ie hollow on the inside.
If I'm happy with the look would you recommend these from a durability point of view
Thanks