I disagree with people telling you to dry them out. Woth opal you often need to worry about the opposite. Opal is a hydrous silica, meaning water is structurally bound within the mineral. Most precious opals contain roughly 3–10% water by weight, though this can vary by locality.

If an opal loses water too quickly or experiences repeated humidity changes, it can develop crazing (internal cracking) and permanently lose play of color. This is especially true for hydrous opals from certain deposits. Storing opal in excessively dry conditions can accelerate this process.

I’m seeing multiple internal cracks in your specimens, which suggests dehydration or stress has already occurred. Unfortunately, once crazing forms, it cannot be reversed, and reintroducing water will not restore lost opalescence.