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Tiger eye or crocodilite ( or whatever it was called like ) is asbestos replaced by quartz hence the fibrious structure and glow or shine ( which asbestos doesn't do ) . Of course there could be traces on there which is unlikely if you got high quality stone. Asbestos doesn't oxidate like falcon eye meaning the iron quartz already replaced the asbestos and oxidates into brown/yellow tiger eye ( a type of rust basically )
All serpentine contains asbestos but it is too little to cause a serious health issue unless you seriously damage the stone and inhale from close. Silver serptine contains ALOT of asbestos and shouldn't be sold or bought. Difference between silver and normal serpentine is that silver variant of silver stripes throughout the stone which is basically layers of asbestos. Stichtite sometimes may contain the dangerous type especially in atlantisite.
All minerals could contain asbestos therefore one should always check large clusters. Smaller tumbled stones rarely contain any unless it's one of the types i described above.
Zeolites usually are found with asbestos one needs to be carefull. with okenite its almost impossible to spot.
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