On Mother of Pearl

Mother of Pearl is an unusual material to work with but it is something that gives our work a unique finish.  One of the techniques or design tools that we use with Mother of Pearl pieces is setting stones into the shell as demonstrated in these two pendants made this week. On the above, the onyx is only partially inserted into the shell. On the  below we have also partially inserted a Topaz but also set a Diamond into the centre. Although the back of these pieces is not shown, they are always finished with some form of decorative design that is a special secret just for the wearer.  What colour gemstone would you put in yours?