Desk lamp - Opalina - Ministerial Lamp

This is the iconic ministerial lamp (also known as the Banker's Lamp), a true pillar of 20th-century design that immediately evokes the atmosphere of a historic library, notary offices, or film noir from the 1940s.
Here are the main details that make it so special:
Aesthetic Characteristics
The Lampshade: Its elongated 'dome' shape in emerald green glass is designed to direct light downward, reducing eye strain. The interior is usually white to reflect light more efficiently onto the work surface.
The Structure: The base and the stem are made of metal, with a finish in antiqued brass or antique bronze, which gives it that solid and "institutional" look.
The Switch: The most loved detail is undoubtedly the ball chain, which produces that satisfying metallic 'click' every time it's pulled.
Atmosphere and Style
This lamp is not just a lighting object, but a piece of furniture that communicates professionalism and culture. The soft light filtering through the green glass creates a warm and focused atmosphere, perfect for those who love to read or write late.
Trivia: Originally patented in the United States under the name "Emeralite" (from emerald and light), it became famous because the green color was considered relaxing for bankers and accountants who spent hours staring at numbers and documents.