This item is a Strombergshyttan Swedish Art Crystal Glass Flower Vase.

Origin: Produced in Sweden by the Strombergshyttan factory, likely dating from the mid-century modern era (circa 1950s-1970s).

Design: The heavy, thick-walled crystal glass often features a slight blue or "ice" tint.

Decoration: It is adorned with delicate hand-etched or engraved floral patterns.

Markings: The base is often signed "Strömbergshyttan" along with a model letter and number code