Cinema 4D: Model a simple Glass
Use the Bezier spline to draw a simple spline similar to the one illustrated below (if you find it difficult to draw it in C4D you can draw it in illustrator and export it as illustrator 8 file, then import to C4D).
Drop the spline inside a Lathe NURBS. You will get something similar to this.
Create a new glass material, in the transparency tab set refraction to 1.5. In the reflection tab add a Gradient, make it 2D circular, drag black to the left and white to the right side. Use this material for your Lathe NURBS.
From the light objects add a sky and use a gradient background material for it.
Add other lights to enhance the final render.