Colored Amethyst [LATEST]

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

When first produced, this glass appeared perfectly clear. Found in the ruins of late-Victorian and early-20th-century

Around the start of World War I, the supply of manganese (largely imported from Germany) was cut off. US manufacturers switched to selenium , which turns a straw or amber color when exposed to the sun, marking a distinct shift in the archaeological record. 3. Common Artifact Types Archaeologists frequently recover SCA in the form of: Colored Amethyst