Diamond crystal. Solid carbon comes in different forms known as allotropes depending on the type of chemical bond. The two most common allotropes of pure carbon are diamond and graphite. In graphite the bonds are sp orbital hybrids and the atoms form in planes with each bound to three nearest neighbors 120 degrees apart. In diamond they are sp and the atoms form tetrahedra with each bound to four nearest neighbors. Tetrahedra are rigid, the bonds are strong, and of all known substances diamond has the greatest number of atoms per unit volume, which is why it is both the hardest
What a Mess! What a Mess! What a Mess! () is a 1995 farce comedy film of late post-Perestroyka era directed by Vladimir Menshov. While digging in the mine "Unpromising" in Yakutia an unprecedentedly large diamond was found. It is christened as the "Savior of Russia". Officials proclaim that the sale of the diamond could pay for every Russian citizen to take a three-year-long vacation at the Canary Islands. When the diamond is being transported to Moscow (by Antonov An-124 "Ruslan") it is stolen by the crime boss Kozulskiy (Armen Dzhigarkhanyan), who is then robbed by professional thief Vasiliy Krolikov (Valeri Garkalin). For