Natural Crystal Column Bamboo Lid Energy Glass Creative Water Cup $ 19.42 Product Information: Style: creative Function: Health Structure: double layer Capacity: 501-600ml Product quality level: excellent product Material: high borosilicate Spar name1: Green fluorite 2: Labradorite 3: Fantasy Amethyst 4: Citrine 5: Tiger's Eye 6: Black Magic Stone 7: Black crystal 8: White crystal