- 石英表 shíyīngbiǎo quartz watchA watch powered by the vibration of a quartz crystal for high precision and stability
- 石英钟 shíyīngzhōng quartz clockA highly accurate timepiece that uses the vibrations of a quartz crystal instead of a pendulum to keep time.
- 石英岩 shíyīngyán quartziteA type of hard metamorphic rock formed from the recrystallization of sandstone or chemical siliceous rocks, consisting primarily of quartz.
- 紫石英 zǐshíyīng amethysta purple variety of quartz
- 紫石英号 zǐshíyīnghào HMS AmethystHMS Amethyst, a British Royal Navy ship involved in the 1949 Yangtze Incident with the People's Liberation Army
- 石英卤素灯 shíyīnglǔsùdēng quartz halogen lamp
- 石英玻璃 shíyīngbōli quartz glassHeat-resistant glass made from silica; used for high-temperature equipment, mercury vapor lamps, and optical lenses.
- 石英脉 shíyīngmài quartz vein
