I like the concept and the "feel" of the shot, but it is a bit dark for me. The composition is interesting, and I like the angle of the light that creates the highlights.
Great capture on the transluscence of the marbles and the reflections. This would also be a winner in the "soft focus" challenge for the way you bring the viewer directly to the one sharply focused item in the line.
A lovely composition - that snaking curve combined with your DOF choice, works extremely well for me. I love the way the glass reflects the green beneath, making additional shapes of white reflection, shades of green and black shadows.