Stishovite is a mineral that may not be well known to many people, but it has several synonyms that are used interchangeably. The mineral is commonly referred to as "silicon dioxide" or "SiO2", but it is also known as "high-pressure quartz" due to its formation under extremely high pressure. Another popular synonym for stishovite is "tetragonal silicon dioxide," which is a reference to its crystal structure. Additionally, some researchers refer to stishovite as "rhombohedral silicon dioxide" due to its hexagonal prism shape. Finally, stishovite is also referred to as "dense silica" because it is denser than regular quartz. Regardless of the synonym used, stishovite is a unique and fascinating mineral that is highly valued for its rarity and scientific significance.