I think it's beautiful when pronounced kon-STAN-tee-a, but I find kon-STAN-sha ugly. I also like
Constantina and the Polish form,
Konstancja. My favourite combos are
Constantia Evelina,
Constantia Lavinia,
Constantia Magdalena, and
Constantia Sibylla.
masculine list:
https://www.behindthename.com/pnl/191050/124079feminine list:
https://www.behindthename.com/pnl/191050/124080