Very decorative metal stands to hold your crystal clusters and slices. Very nice gold-coloured. Here is a video comparing them.
Sizes:
- Small size
- Medium size
- Large size
- Extra large is adjustable and for very large slices and specimens. And it has a white plastic coating over metal, and can be moved into different angles.
For dimensions – use my hand as a guide and the photo with the dimensions on them
I do not know if they have nickel in them.