How do I obtain these stones to evolve my dragon. The only way I see is to actually purchase them.
You purchase them in the store, if they are still available.
That’s the only way?
Yes, it is. If I recall properly the first stone was $4.99 USD, the next tier was $19.99.
Please use the search function. @Elle already answered the question, but it could also be found in the many closed threads, as well as in red’s FAQ