WMF - erich jachmann - Baluster vase (2) - Crystal - Optical Wave vases

These heavy blue glass vases are the iconic “Optical Wave” vases, designed by Erich Jachmann for WMF (Württembergische Metallwarenfabrik) in Germany during the 1950s and 1960s.
The design is known for its thick glass walls, dark blue to turquoise hues, and the wavy optical structure inside the glass, which creates a beautiful play of light. The original gold WMF Kristall sticker label is also still partly visible on the vase on the right.