Please help with ID?

Bought as coober pedy. In bright/right light it does have decent color play but it moves oddly and is a weird opaque pink. Feels like plastic more than opal, quite light. It doesn’t fluoresce or phosphoresce and sticks to a wet finger. Are lab created opals hydrophane? I’d say Ethiopian but it feels very off. Hoping to get a refund. Thanks! 🙏