Colored Amethyst -

Found in the ruins of late-Victorian and early-20th-century structures.

The purplish hue is the result of a specific manufacturing process: Colored Amethyst

Because manganese was the primary decolorizer used specifically from 1890 to 1920 , the presence of SCA shards helps researchers pinpoint the age of a historical site. Found in the ruins of late-Victorian and early-20th-century

Manufacturers added manganese oxide to "mask" the natural green or aqua tint caused by iron impurities in the sand used for glassmaking. Colored Amethyst

Beverage and medicine bottles are the most common finds. Tableware: Pressed glass dishes and decorative items.

When first produced, this glass appeared perfectly clear.

SCA glass is a critical diagnostic tool for cultural resource assessments and archaeological surveys.