Vintage Jeanette Glass Amberina Red to Yellow Fentec (stars & arches) Bowl

Amberina glass:
Coloration:
Amberina glass is known for its distinctive gradient color, shifting from red at the top to amber at the bottom, or sometimes in reverse. This effect is achieved by reheating specific sections of the glass during production.
Composition:
The unique color change is due to the presence of colloidal gold in the glass mixture, which reacts to heat and turns red at certain temperatures.
Origin:
Amberina glass was first patented in 1883 by Joseph Locke of the New England Glass Company.
Manufacturers:
While originally patented by the New England Glass Company (later Libbey), other companies like Jeannette Glass also produced Amberina pieces.
Pattern:
The specific pattern on this bowl is often referred to as "Fentec" or "stars and arches".