MicrostockGroup

I understand that these patterns of cut glass are probably distinctive to the maker and the product line ... but are images of these products considered suitable for stock?  Or are they rejected on the grounds of copyright/trademark?

Searching at IS, couldn't find any images of what I wanted under "cut glass" but I think this is a keyword problem.  It considers "cut glass" to be a synonym with "crystal".

Google turned up quite a few images at istock of the type I had in mind so I guess it's OK. 

http://images.google.ca/images?hl=en&q=site%3Aistockphoto.com%20%22cut%20glass%22&um=1&ie=UTF-8&sa=N&tab=wi

I hope that customers know enough to try google if they get no results with the built-in search.  Probably lots odd things like that which fall between the cracks, leading me to conclude that it is vital to specify a clear and meaningful image title and description, especially if it's something for which the keywords are inadequate.

The best people to ask would be the merchant who sells them. If a product is recognizable by design, I would assume it can lead to IP situation.
Much like  Tom Waits or the golden arch,etc...
As for just upload and try. I am not even sure this is the best thing either. In IT infringement, the contributor is responsible. At least that's how I understand the Agreement we sign. 
Maybe someone with IP legalese will be able to help on this.