How to determine natural stones range?

First off... sorry for the long @$$ video... My attempt in this video is to answer some questions concerning natural stones ranges. How do I know that the stone is a finisher or mid range? etc... Please let me know if I missed anything and this video merits a 2nd part. All of my videos are recorded in HD, therefore if you want the best quality... ensure your settings are set to 1080HD. Thanks for Watching