Clear bubbles with white speckles on glass

[AstroCoral]

Hello all,

Does anyone have any idea what this is in the center of the picture on the glass? They are clear and have a bit of white speckles on the bottom of each bubble. I have about 7 or 8 of them all over my glass. Don’t mind the diatoms, my new tank is going through some ugly stages.

 

[zoomonster]

Eggs of some sort. My snails lay eggs all over but not seen one like that unless I just didn't look that close. If I were to guess, I would say Nerite snail eggs.

 

[AstroCoral]

Eggs of some sort. My snails lay eggs all over but not seen one like that unless I just didn't look that close. If I were to guess, I would say Nerite snail eggs.

I don’t have any nerite snails but I do have one columbellid snail. Googling “columbellid snail eggs” shows similar shaped clutches of eggs. Thank you for the help