Is there a specific name for the coating on these stones?

[hertzgirlz]

I've just always called these oil slick stones but is there perhaps a better descriptor?

[christinesclassicjewelry]

Dichroic maybe?

[1940fc]

Reminds me of carnival glass

[old.crows.nest]

I second Carnival Glass.

I have seen it referred to as textured Carnival Glass.

[1940fc]

Karen, I was searching something for Mermaid & stumbled across these  sold earrings by Laguna. Says necklace had paper tag

http://www.gardenpartycollection.com/productDetail.php?id=3010&item=Laguna_Carnival_Glass_Earrings

They sure look like your bracelet!  Color might be a bit different but same design.  I bet your bracelet is  Laguna also

[hertzgirlz]

 Whoa Sarah--those look exactly like the sets in my bracelet.  You do run into the most interesting things!!  Thanks so much for letting me know--mine probably are Laguna and I will do more research in that area.