- Orlando (/ɔːrˈlændoʊ/ or-LAN-doh) is a city in, and the county seat of Orange County, Florida, United States. Part of Central Florida, it is the center of the Orlando metropolitan area, which had a population of 2,509,831 in 2017, according to the U.S. Census Bureau. It is the sixth-largest metropolitan area in the Southern United States and the third-largest metropolitan area in Florida behind Miami and Tampa Bay. Orlando had a city population of 307,573 in the 2020 census, making it the fourth-largest city in Florida behind Jacksonville, Miami, and Tampa. It is the state’s largest inland city.
- Chalcedony (Wikipedia)
Chalcedony (/kælˈsɛdəni/ kal-SED-ə-nee, or /ˈkælsəˌdoʊni/ KAL-sə-doh-nee) is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. These are both silica minerals, but they differ in that quartz has a trigonal crystal structure, while moganite is monoclinic. Chalcedony’s standard chemical structure (based on the chemical structure of quartz) is SiO2 (silicon dioxide).