Pen holder made of an agate disc vintage outlet

Very nice pen holder, made of an agate disc in the colors blue / brown.

An unusual accessory for the home office or for the desk on
of work.

The pen holder is in a good used vintage condition with little sign of the times.

The original pen is available, unfortunately it outlet does NOT write.
The mine can be replaced, but I have not found a suitable one.

Dimensions, approx.:

Length: 12 cm ( 4,72'')
Width: 8 cm ( 3,14'')
Weight: 410 grams