"I intend on spending at least a little time talking about your perception of how your emails are likely to affect someone - and I will share how they effected me."

Grammar aside, I read this as saying you perceived his response (timing and content) to mean something different than he intended, that you read too much into them. So he wants to talk about how your misperception came across to him. While I don't like his style for myself, it is something that you've taken to, so I would consider this part of his style of working with you, which is to say hey--I didn't mean what you assumed I meant and when you assign that kind of meaning to me, it has X kind of effect on me. But underneath all of it, he's not upset at all, just wants you to know how it comes across.

Again, I wouldn't like that kind of approach, but if it helps you, then that's your call. And for what it's worth, it's really offputting to me when someone assigns a negative meaning to something I've done or not done, when I never meant anything of the sort they thought. It feels assaultive to me. I doubt your therapist feels anything like that, but this is an example of why he might feel it's his job to give you feedback on how he responds to your assumptions about him.


So, to recap: I don't see a single thing here that's an indication he said anything negative about the stone, the shell (except for his pickiness) or you.