I recall seeing these sort of stone ornaments (not cement) from an exhibitor at the Interior Design show. Unfortunately, I don't recall teh name of hte seller. I've also sometimes seen these things at Kuda which is a furniture store specializing in Asian furniture, and Green Tea - Japanese & Korean furniture store. However I can tell you these aren't cheap and can cost well over $1000. Cheaper stone ornament are made of cement and perhaps you could try seeking these things by contacting garden centres (before wasting time traveling), such as Angelo's in the York region, Woodhill gardens. Another way to find these sellers is by looking at the ads in magazines such as Garden life. If I do spot ads I'll let you know.