I'm having a difficulty trying to recreate the glassy sphere from the bottom. Can someone help me with a step by step guide or something similar?. I've tried to reproduce this object. But I don't know how to achieve the glassy effect.

The figure from below is a second example which I also intend to recreate but I don't know how to do it. The upper portions are trimmed so I don't know how it would be those gaps, I'm only assuming it follows the path of the shade.

I guess that this image has different layers but I don't know how to achieve this. I intend to use it at the end of one rod so the whole image must be copied. Can someone help me?. I'm stuck with this.

The figure from the third set is the second part of my question:

How can I creste a sphere which has an inner shadow and a blurry shadow?. Can someone help me with how to create the effect as seen in the three objects?. I'm stuck with that part. Which tools should I use?. Can someone help me with this?.

Maybe something like this will help: https://dsignomatic.blogspot.com/2015/10/glassy-shiny-sphere-inkscape-tutorial.html