Chain with clasp as focal point project

I've got my wax carved and almost ten inches on my chain.  I need thirteen so I have a number of hours to go yet weaving links.

The wax turned out, closing and latching as intended, but the stone setting has become problematic.  I initially intended a chrysoberyl, but it is yellow and doesn't fit with the project in silver.  I have a couple of small blue-green emeralds that would go nicely with the silver, but would require a complete re-design of the clasp.  Not sure I have time for that, but do have some drawings.