what’s kind of silicone material suitable for the ...

Normally, it requires soft silicone to make molds for products with delicated patterns.  Becuase silicone rubber with high hardness will be easy to breakdown, if using the silicone rubber with a high hardness for small sized products with delicate and intricate designs, it will be not easy for demoulding, and the fine details on the product might be fractured when demolding becuase of the hard molds.  If the making molds for a large products with delicated patterns, we adive you to use a silicone material with moderate hardness.