Opaline seduces with its softness, diffused light, and captivating colors. But when you want to buy a piece, how can you tell if it's authentic and antique , or simply inspired by the style? Here are the best ways to spot a real antique opaline and avoid confusion.

1. First, the story: what is a “real” opaline?

Opaline is an opaque glass , generally white or colored in the mass, produced mainly in France in the 19th century , notably between 1820 and 1880. It was born under the Restoration and established itself as a luxury material, often used in tableware and decorative objects.

Manufacturers such as Baccarat , Saint-Louis , Portieux and Le Creusot have created magnificent pieces that are now highly sought after.

2. Visual clues of an old opaline

Here are the details to observe to recognize an old piece:

The appearance of the glass

• Milky, homogeneous, slightly satiny glass

• No regular bubbles or garish hues (beware of modern imitations)

• Color in the mass : the tint does not flake, it is "in" the glass

The weight

• Old opalines are heavier than modern copies: they are blown from a dense, thick glass

The base

• A really good clue: the base is often hand-polished , sometimes irregular, or has a pontil mark (the mark of the blower's stick)

• No molding or plastic: this is not pressed glass

The style

• Floral motifs, neoclassical, Art Nouveau or Empire inspiration

• The old forms are often graceful , with curves, fine handles, fluted feet

3. Trademarks and signatures

Some opaline pieces are signed , but many are not. Here are some marks to look for:

• Portieux Vallerysthal : sometimes marked "PV" or "France"

• Baccarat : rarely signed before 1936, but identifiable by style

• Saint-Louis : circular punch in certain cases

• Le Creusot : difficult to authenticate without expertise, but highly sought after

💡 Good to know: the absence of a signature is not a problem if the other clues are present.

4. What about modern copies?

There are many beautiful modern creations or those inspired by the old opaline style. They are not "fake", but they do not have the same collector's value . They can be recognized by:

• Too bright or fluorescent colors (often on recent Empoli glasses)

• A molded or injected base

• Standardized shapes, sometimes very symmetrical

• An unusual lightness

5. Our advice for buying with confidence

• Buy from specialist sellers (like here 😄)

• Ask for several photos (base, details, texture)

• Ask questions : origin, estimated era, manufacturing method

• Trust your eye... and your hand : the true charm of opaline can be felt as much as it can be seen.