Free Glass Appraisal App Guide: Marks, Pontils, Signatures, Color, Form and Damage
Use a free glass appraisal app to triage art glass, crystal, bottles, marks, pontils, signatures, color, damage, age clues, and appraisal next steps.

Found glass and want to know if it matters?
Upload photos. We identify the object, check real sales, and show the right appraisal path.
Use the free screenerStart an appraisalQuick value checklist
- Identify form: vase, lamp, bottle, bowl, paperweight, sculpture, perfume bottle, dish, or tableware.
- Check maker marks, signature, label, pontil, color, technique, dimensions, and whether the piece is part of a set.
- Photograph chips, cracks, cloudiness, scratches, repairs, missing stoppers, wiring, and replaced fittings.
Key value drivers
Glass value is shaped by maker, design, technique, age, rarity, size, condition, signature, provenance, and demand. A Murano lamp, cameo glass vase, crystal paperweight, and perfume bottle need different evidence.
When to get a professional appraisal
Use the free screener first. Move to a professional appraisal when the glass may be signed, insured, inherited, high-value, part of an estate, or difficult to separate from reproductions.
Photo checklist
- Full object, base, rim, signature, label, pontil, side profile, interior, underside, fittings, stopper, and scale reference.
- Close-ups of chips, cracks, scratches, cloudiness, repairs, residue, missing parts, labels, and provenance paperwork.
Market evidence note
A free screen can organize visible clues and next steps, but it is not a final appraisal. Sale records and catalog examples must be matched to the exact item, condition, originality, provenance, and current demand.
Choose your next step
Use the path that matches the decision you need to make about the item.
Need a signed report?
Use this for insurance, estate, donation, resale, or documented value decisions.
Start a signed reportNot sure it is worth appraising?
Start with a lower-friction screen to understand the likely category, evidence, and next step.
Use the free screenerNeed local or specialist help?
Compare directory options when the work needs in-person review or a specialist near you.
Find art appraisersSee what the report looks like
Sample reports show how photos, comparable evidence, condition notes, and a value conclusion are documented.
Found an old item and want to know if it matters?
Upload photos. We identify the object, check real sales, and show the right appraisal path.
Start with the free screenerStart a professional appraisal