This is a Vetreria Etrusca vintage-style glass bottle with a cork stopper.

The bottle has a light green or aqua tint and features an ornate, square base with embossed detailing.

It is a decorative item, often used as a cruet bottle for oils or sauces, or simply as home decor.

Vetreria Etrusca is an Italian manufacturer known for its vintage and retro-style glass products.