Crab , pinkie and birthstone here thank you

Good Morning Sprinkles. xx

Saturdays riddle answer was - A Cat.
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Yesterdays again in case you missed it.

If you drop me, I’ll crack. Smile at me, and I’ll smile back. What am I?
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Todays is:-

I can come mostly from one thing.
This thing does not look like me.
This thing has many rings, but not any jewelry.

I have probably given it all away,
So now I have only one more thing to say:
What am I, and what is this thing?
Remember that I and it could be gone in a blink.

All answers on my back wall please. xx