Cobalt Blue Glass Oil Lamp Value Guide

This turn-of-the-century oil lamp is a quintessential example of American functional art, combining a vibrant cobalt blue glass font with a sturdy brass base. Produced between 1890 and 1920, these lamps are highly collectible for their striking deep blue hue and their historical significance as primary household light sources during the kerosene era.

What affects the value of Cobalt Blue Glass Oil Lamp?

• The physical condition of the cobalt glass, specifically the absence of chips, cracks, or clouding.
• The presence and functionality of the original brass burner and adjustment knob.
• The overall patina of the brass base, where original finishes are generally more desirable than over-polished surfaces.
• The clarity and intensity of the cobalt blue pigment within the glass font.

How to Identify Cobalt Blue Glass Oil Lamp?

• Examine the glass font for the characteristic deep, uniform cobalt blue color typical of late 19th-century American manufacturing.
• Check the burner and base for genuine brass construction rather than modern plated alternatives.
• Look for period-correct threading on the burner assembly that matches the 1890-1920 production standards.
• Inspect the glass for era-specific imperfections such as small air bubbles or slight mold seams.

History of Cobalt Blue Glass Oil Lamp

Oil lamps have been used for thousands of years to provide light. Early lamps were simple containers for fuel with a wick. Over time, designs evolved, and by the 19th century, with the advent of kerosene, decorative glass and metal lamps became common household items, prized for both their utility and aesthetic appeal. Cobalt blue glass was a popular choice due to its striking color.