This Murano Seaglass Pendant was collected by Manuela Vetro, a beachcomber who lives close enough to the factory that she occasionally finds pieces murano seaglass. She described this found  pendant piece as "once a Vase." It measures 2 1/2inches in length, and 1 1/4 inches wide.  The actual glass piece is 1/4 inch high. 
A quarter helps to estimate the overall size. It is sterling silver with a fine silver bezel and comes with an 18 inch handmade chain in fine silver. The red heart is has a back cutout to let the light shinre through.