Landscape Tiger Eye slabs from South Africa. Tiger Eye has long been considered a quartz replacement of asbestos, otherwise known as a pseudomorph. (The asbestos is gone so it’s harmless to cut!) Later research into the origins of tiger eye shows it is actually not a pseudomorph.
The fibrous structure of tiger eye creates chatoyance and also gives it a definite grain structure. Bear in mind, you have to be careful that it doesn’t tear out when grinding and polishing.
It will take a nice polish with cerium oxide, tin oxide, or diamond. (We like to use diamond.) Mohs hardness 7.