Little Bumps on Quail Egg - What is it?

[Inga73]

I just collected this fresh quail egg, laid within the last 12 hours. I've never seen one with these little bumps before. Anyone know what it is?
Thanks in advance!

 

[Poultrybonkers]

Extra calcium deposits

 

[Inga73]

Extra calcium deposits

That's what I was hoping for! Thank you

 

[Chip76]

That's so weird!! Why are the lumps only on the dark spots?