These river quartz can improve the energetic qualities of your water for tea, if you are interested in that aspect of tea. These can be put in either your kettle or your water urn. Every crystal will be different in size and shape. You will get three pieces. We have found that leaving them out in the sun once a month is quite powerful. Also, if you really want to have fun with an experiment, drink a tea you are very familiar with, then put the crystals out over night during a full moon and drink the same tea again the next day with the crystals in the water.