Probably the most versatile of all minerals and crystals, Clear Quartz is beneficial for all chakras but especially the crown chakra.  My favorite quality of Clear Quartz is that it can amplify or enhance the properties of other gems and minerals.  And the most unique characteristic is that it can be programmed with your specific intention making it "customized" for your current needs.  
The icosahedron shape adds the energy and fluidity of water, aiding in ease in transitions helping us to literally “go with the flow “.  This piece weighs 3oz.