I'm not 100% sure what these are made of, nor if they are antique or not.
Several, very similar looking ones I see for sale in other places are called "onyx", a couple others are described as "marble" (which I don't think they are).
Anyhow, here are six of them in a nice case.
I'm sorry to say one of them was broken at the stem, but has been repaired.
I'm pricing them lower than what I paid, several years ago.
I see a set of two for sale for $84, and a set of six for $236, so my price seems reasonable to me, for five undamaged ones and one repaired (which if the glue is any good will stay together).
I have a tray made of the same material, and if you buy this set, it will be included, when I find it.
I make trips to the Des Moines area rather frequently, so if that is where you live, we can meet at some convenient location for the sale.
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