The scenery in the cup

The ball in the GMARK trophy is exactly the same as your plan. You can learn about its manufacturing process.

The blue ball may not be able to do so technically, at least not so round..
In addition, when rendering the glass, select an indoor mode in the right lighting or the product mode preset will not look so black, or increase the ray rebound value.
It doesn't matter. The point is, it's pretty good.

Blood drops recognize relatives

Ink in Water

So what I see is what I see

To express what

Is this a cup