When King Charles III is crowned in London on May 6, the coronation ceremony will involve the Stone of Destiny, a Scottish carved seat that's at least 800 years old. Despite its long history, scientists only recently noticed never-before-documented symbols and other anomalies on the stone, they announced in a statement.
These anomalies — a copper alloy stain and the remains of gypsum plaster — suggest that the historical block, also known as the Stone of Scone, has unknown aspects of its history that aren't recorded in documents.
