Opaline glass lighting is known for its soft white translucency and ability to diffuse harsh light without compromising brightness. These shades gained widespread popularity from the late Victorian period through to the mid-20th century, particularly in public buildings and educational settings.
Forms range from simple domes and globes to the highly recognisable "schoolhouse" shades — a term often used to describe their tiered, flared, or bell-shaped silhouettes. These were frequently paired with industrial fittings in brass, aluminium, or enamelled steel to help diffuse glare in factories, hospitals, and offices. Opaline remains a versatile option for kitchens, hallways, and bathrooms, offering a neutral tone with classic appeal.