How do I identify a genuine cobalt glaze?

A genuine cobalt glaze sinks slightly into the surrounding ceramic body during high-temperature firing, creating depth and subtle variations in tone rather than sitting as a flat, painted layer on top. Under magnification, the blue colour appears integrated with the glossy vitreous surface, often showing natural pooling around incised lines or handles.

Can I use these vases for fresh flowers?

Most glazed stoneware and porcelain vessels hold water safely, but porous earthenware or antique pieces with hairline fractures require a protective glass insert to prevent moisture damage. Hand washing in lukewarm water preserves the historic glaze and prevents accidental thermal shock to fragile ceramic bodies.

What is the difference between Delftware and porcelain?

Delftware uses a tin glaze over a softer earthenware body, resulting in an opaque white surface that often shows minor crazing or flake chips along the rims. Porcelain is a vitrified, non-porous material that rings when tapped and maintains a completely impervious, glassy structure from the initial firing.

How do I date an antique ceramic vase?

Dating relies on a combination of factory backstamps, potting characteristics, glaze chemistry, and stylistic markers associated with specific manufacturing periods. Comparing the base construction, foot ring wear, and signature styles against established reference archives provides an accurate window of production.