Please can someone help identify my rock? Or whatever it is!!!!

[Ashlynella]

Hi can someone please help identify my rock,, I found it a few years ago in NSW
Any help greatly appreciated..
Thank you.

 

[Ashlynella]

The outside was a coarse white colour hard rock with the middle being a cloudy grey but after cutting back ( I still need to finish & polish ) it's a beautiful blue & white with an almost clear centre!!!!!

 

[Rockhound]

Looks like some kind of agate.Nice piece

 

[Heatho]

I'd say Agate too, very unique, it's a beauty.

 

[AtomRat]

Strange rock. Kinda a mix of onyx, agate, lyndian stone, chert / flint.. The clearish white larger crystals tend to learn towards more an agate type nodule, with the larger cystals on the inside of the 'ball' or shape it once was. The external area is very interesting though, very silicified, mabey even possible organic or glassy like obsidian. I like it

 

[silver]

Agate, only bigger ?