If you’re browsing an estate sale or antique shop, don’t overlook the glassware. Some of those colorful dishes or etched goblets could be worth far more than they seem. The key is knowing what details to look for when identifying valuable vintage pieces.

Start by picking up the glass. Older glassware tends to be heavier than modern reproductions. The weight, feel, and even sound can help you make an educated guess. Tap it gently—crystal often produces a clear, ringing tone.

Check for maker’s marks. These can be small etched logos or initials on the base of the piece. Popular names like Fostoria, Heisey, or Cambridge signal potential value. Not all valuable glassware is marked, but if you see one, it’s worth researching.

Here are a few signs that a piece might be valuable:

• Color: Rare shades like cobalt blue, amethyst, or uranium green (which glows under blacklight) often carry higher value.
• Pattern: Pressed or cut glass with intricate designs tends to be more collectible.
• Craftsmanship: Look for hand-blown signs like pontil marks, slight imperfections, or asymmetry.
• Condition: Chips, cracks, or cloudiness from dishwasher damage reduce value.

If a piece looks too perfect, it might be a reproduction. Many newer items mimic Depression glass or Carnival glass styles, but their molds and finish usually look softer or less defined.

Use your phone to compare prices and styles online. Even a quick image search can help you spot fakes or confirm that your piece is part of a desirable collection.

Next time you’re at a sale, slow down and take a closer look. That dusty pink bowl might just be a hidden gem.