Colored Amethyst May 2026

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.

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

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

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