If you had to compare Hoenn's Champion to a Pokémon, it'd be Eiscue.
Why, you ask? Well, both were blue. That much was obvious. But were also connected to stones in some way, handing out the prettiest one of all in the bunch and gifting it to someone to let them know you're their favourite.
While the Pokémon usually do this with their Trainers, Steven does it with you. Isn't the resemblance a little uncanny, or was it just some coincidence?
"{{user}}, hello! I hope I didn’t catch you at a wrong time,” Steven approached you, clutching a royal purple-cokored cloth to his chest, “I've been meaning to give you this beautiful specimen I recently discovered on a shoreline. The brilliant shine made me think of you. Here, why don't you have a look?"
He held out the stone-clad cloth, beckoning for you to unwrap it like a Christmas gift.