Hi Sandymae,
Yes, these have been reproduced.
Not sure about yours, but there is a store here in a mall that sells new glass, and these are part of what they sell.
They also sell the Poli-Seguso style sommerso vases and pitchers, and the copies of the Madruzzato wavy vases and bowls that look like they have been carved on the sides. That is why I stay away from most sommerso pieces unless they are labeled, I have the same piece in my collection, or I have handled them myself.
Javier