All of these centerpieces are Italian silver plate (flash plated).
(Click on each image to see more detail.)
Chalice Rosary Center
7/8″ tall and 5/8″ wide (including top and bottom loops).
JHS/RCIA Rosary Center
7/8″ tall by 3/4″ wide (including top & bottom loop).
Guardian Angel Rosary Center
A little over 1″ tall by a little over 5/8″ wide (including top & bottom loops).
St. Michael the Archangel Rosary Center
A little under 1″ tall by about 5/8″ wide (including top & bottom loops).