Stealth address transaction example on Bitcoin's blockchain
You cannot tell them apart from transactions using ordinary addresses; they are exactly the same.  Any regular transaction you look at could have been created using a stealth address.

As I wrote in my answer here, a "stealth address" is just one particular way of generating a unique address, known only to the payer and payee, to use for a transaction.  Once the unique address is created, the transaction itself is created just like any other.