Cullet (Slag Glass) Fragment
Industrial Glass Artifacts

Cullet (Slag Glass) Fragment

This item is a large chunk of cullet or 'slag glass,' likely a byproduct of industrial glass manufacturing. It exhibits a vibrant apricot or honey-amber hue and is translucent to transparent in quality. Physically, the piece measures approximately three to four inches in length, featuring a rugged, irregular shape with prominent conchoidal fracturing. This shell-like breakage pattern is characteristic of amorphous silica materials. The internal structure contains various spherical gas bubbles (seeds) of varying sizes, which indicate it was cooled from a molten state rather than formed through natural geological processes like quartz or amber. The exterior surfaces show a mix of sharp, fresh glassy edges and matte, slightly weathered areas. There are no maker's marks or signatures visible, as this is raw material rather than a finished piece of decorative art or glassware. It appears to be an mid-20th-century specimen, often salvaged from glass factory dump sites. The lack of a crystal structure and the presence of uniform coloring throughout suggest This is man-made glass, valued primarily by collectors of industrial artifacts or as raw material for landscape decoration and lapidary work.

Estimated Value

$15.00 - $25.00

Basic Information

Category

Industrial Glass Artifacts

Appraised On

January 25, 2026

Estimated Value

$15.00 - $25.00

Item Description

This item is a large chunk of cullet or 'slag glass,' likely a byproduct of industrial glass manufacturing. It exhibits a vibrant apricot or honey-amber hue and is translucent to transparent in quality. Physically, the piece measures approximately three to four inches in length, featuring a rugged, irregular shape with prominent conchoidal fracturing. This shell-like breakage pattern is characteristic of amorphous silica materials. The internal structure contains various spherical gas bubbles (seeds) of varying sizes, which indicate it was cooled from a molten state rather than formed through natural geological processes like quartz or amber. The exterior surfaces show a mix of sharp, fresh glassy edges and matte, slightly weathered areas. There are no maker's marks or signatures visible, as this is raw material rather than a finished piece of decorative art or glassware. It appears to be an mid-20th-century specimen, often salvaged from glass factory dump sites. The lack of a crystal structure and the presence of uniform coloring throughout suggest This is man-made glass, valued primarily by collectors of industrial artifacts or as raw material for landscape decoration and lapidary work.

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