This is a crystal square vial with a clear rhinestone.  They are 1.50cm-2.5cm (approx.) and hold 0.1 ml of liquid.  You can easily open the bottle by the screw-in stopper to add your own perfume, essential oil, or oil blend of your own creation, and then carry your magickal oil or blend in the bottle everywhere you go. 

The available colors are Clear, Purple, and Blue.