Staff take no chances at a dog-grooming salon in Rotterdam in the second decade of June 2023. (Photo by RUT/Splash News and Pictures)

The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the formula FeS2. This mineral's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool's gold. The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.
In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.

Participants wearing historical attire compete on historical high wheel Penny Farthing bicycles in the traditional 'One Mile Race' at Letna Park in Prague, Czech Republic, November 7, 2015. The meeting of Penny Farthing bicycles is taking place for the 22th time. (Photo by Filip Singer/EPA)

Fireworks from Japan light up the sky at the start of the 6th Pyro musical competition Saturday, February 7, 2015 at the Mall of Asia shopping complex at suburban Pasay city south of Manila, Philippines. The fireworks competition, which runs for six consecutive weekends, features entries from 11 countries as host country the Philippines, Canada, United States, Japan, United Kingdom, Brazil, Portugal, China, Mexico, Italy, The Netherlands and Sweden, with Canada winning the championship last year. (Photo by Bullit Marquez/AP Photo)

During Madrid's pride week, participants compete during the annual high heel race in Madrid, Spain, Thursday, July 29, 2023. Competitors must wear shoes with a heel of a minimum of 15 centimetres (5.9 inches). (Photo by Bernat Armangue/AP Photo)

Horses eat hay and rest on straw at a stud farm in Wehrheim near Frankfurt, Germany, Tuesday, December 5, 2023. (Photo by Michael Probst/AP Photo)

A young bull flees from a Brazilian vaqueiro, or cowboy, competing in the “Pega de Boi” (Ox Catch) tournament in Cabrobo, Pernambuco State, Brazil, on September 4, 2022. The riders compete in pairs to retrieve a cord from a bull which has been released and runs away from them and they are timed on how quickly they can return with the cord. The leather clothing provides them with protection from the dense savannah vegetation which contains a lot of large thorns. Riders have been known to die competing in the tournament (Photo by Carl de Souza/AFP Photo)

Somali women walk near a fish put on display by fishermen at the Liido beach in Mogadishu, Somalia on May 13, 2024. (Photo by Feisal Omar/Reuters)