What is the Rosetta Stone? A type of precious gemstone used in jewelr A famous painting by Leonardo da Vinci An ancient artifact instrumental in decipherir

The Rosetta Stone is an ancient artifact that played a crucial role in the decipherment of Egyptian hieroglyphics. It is a stone slab inscribed with a decree issued in 196 BC by Egyptian pharaoh Ptolemy V. The decree is written in three scripts: hieroglyphic, demotic, and Greek. Since the Greek text was well understood, it served as a reference for scholars to decipher the hieroglyphic and demotic texts, which were previously undecipherable. This discovery significantly advanced the understanding of ancient Egyptian language and culture. The other options provided, such as a type of precious gemstone or a famous painting by Leonardo da Vinci, are incorrect as they do not relate to the historical and linguistic significance of the Rosetta Stone.