Opal engagement rings? ?

Others have given good advice. Another thing to consider is the construction of the stone itelf. Opals are made in what are known as singles, doublets and triplets. Singles are one solid piece of stone (very expensive and not common). Doublets are made by joining two pieces of stone together, and triplets are made by joining three pieces of stone together. Doublets and triplets are much more common, and more fragile, than singles. Knowing what kind of stone you have will help you in deciding if it's fit for daily wear, and how to care for it. I had a lovely, large triplet opal that I bought while in Australia. It cracked very easily, with a large chunk coming out. Sometimes chips can be reparied, but not always, and you don't always have the broken piece to use in the repair.