LOT 3 Sterling Silver Stone Pendant Agate & More Mixed Lot Vtg

Two of these are marked 925. The lighter orange one on the right is not marked that I could find. The other two ARE marked. 

These are about 1 1/2 x 1 inch.

I don't know what kind of stone, or if they are stone for sure. I'm pretty sure the white one is agate.

Please decide for yourself and let me know if you have questions. Thanks

Please check images for details and let me know if you have any questions. Thank you!