A relatively simple design created in Fusion360 using the Loft function. It will work in spiral vase mode, but I really urge you to use a nozzle larger than .4mm. I recommend printing it with multiple perimeters with no infill and no top layers. I'm including a project file that also treats the bottom 14mm (the base) to some infill and a top layer separating it from the rest of the vase for printing purposes. The insert allows for easy arrangement of a dozen flowers.
135mm x 135mm x 199mm tall, print insert 5mm smaller (X/Y) than the vase.
The author hasn't provided the model origin yet.