These tumble are something a little different only having one face polished while the rest of the stone remains raw.  This helps with being able to direct the energies to a more specific area.

Clear quartz is a great amplifier when using at alongside other crystals to help with enhancing their properties, however you do need to keep in mind this means that some pairings are not a good idea! For example moonstone being a soothing stone means that when paired with clear quartz it can deplete your energy levels, this means you may not get anything you were intending on doing done.  Which is also a good reminder that quartz need to cleansed often to avoid any attachment of negative energies.