Colored Amethyst ⭐ 👑

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

This report examines glass, a specific type of historic artifact frequently used by archaeologists to date sites from the late 19th and early 20th centuries. Executive Summary Colored Amethyst

SCA glass is a critical diagnostic tool for cultural resource assessments and archaeological surveys. Manufacturers added manganese oxide to "mask" the natural

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