Wood and aluminum ring, made of yew wood.
Yew nowadays is a quite uncommon wood.
Once it was very common in Europe, but it was the best wood for bows making and so the trees slowly became rare in many countries, as they all were used for armies.
It is also known as the tree of Life and Death. Its berries and leaves are poisonous, but the tree is full of life: it can get 2000 years old, if some of it parts die other parts can grow new from the same tree, that in this way can grow for centuries.
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