I'm not sure about the base/plinth either, it does not add to the form in my view. I think you've tried to create the effect of the ripples in the sand on the sea bed and even used textured paint, but they are a little course in their shape
I do like the idea of weaving veneers together, it is an answer to a design problem for something I've been thinking about. The pearlescent white on the inside is reminiscent of nica (Mother of Pearl).
But I think the pearl itself needs turning around, nothing wrong with the colour, you get 'Black Pearls' but the 3 dots give it a face and it looks like it's peeking out at us.
Then I agree with Pete, another imaginative and creative piece that gives us all a pause-for-thought moment.