WorthPoint

MARCH 29, 2024

It can be difficult to test celluloid (and you never want to use a hot pin to prick it because it is highly flammable), but rubbing it vigorously with your thumb can induce a camphor-like odor. Celluloid is also light in weight compared to other plastics like Bakelite, so that’s another valuable identification clue.

Jewelry 52

Jewelry Collectibles Antiques and Decorative Arts Material 52

Penrose Appraisals

FEBRUARY 8, 2024

Speaking of ornament, the way in which an object is engraved, or painted, or carved, or any of a hundred other ways ornament has been used can make a tremendous difference in the overall quality of the item. The proper identification of materials sometimes requires testing, which may require the assistance of an expert.

Collectibles 52

Collectibles Material Maker/Artist Provenance 52

Art Advisor's Blog

JULY 11, 2019

You just moved across the country and your favorite painting arrived with a gash through the canvas. This sort of appraiser would need certification from GIA or one of the other jewelry organizations to qualify since identification of various precious stones is a requirement. Not all signed works lead to a known artist.

Appraiser/appraisal 52

Appraiser/appraisal Fine Art Residential Valuation 52