Found 2 stones with blue running through it

[heartsongs]

Not sure what kind of stones/small rocks these are. Found them by the Lake today S.E.Michigan. Never came across any like this before. Both have a baby blue pearlized kinda running through them, and the blue really stands out like shiny. Does anyone know? thank you in advance

 

[Argentium]

It could be a number of things - I'm thinking perhaps Azurite ,or Chrysacolla - I'm sure the "Rock Hounds " will chime in soon .

 

[austin]

Lick your finger. Touch it to the blue. If it sticks it's copper...
You can also do the old timer way. Lick the rock. If your tongue adheres it's copper.

 

[heartsongs]

nope it didn't stick...when I first seen it I thought someone had painted it. I picked it up then seen all the blue veins going through it. Then I found another but it didn't have as much blue. We have had so many storms here almost daily, and today it didn't storm however we had east winds with 3 footers coming on shore. Also found a couple other questionable interesting things. will be posting them tomorrow. Thanks so much

 

[RustyGold]

Turquoise maybe! Looks like it. Middle stone don't know.