Top Seven Expensive Things in the World
1)Antimatter(– $61.22 trillion/gram)
The idea of antimatter is strange, made all the stranger because the universe appears to be composed entirely of matter. Antimatter seems to go against everything you know about the universe.
But you can see evidence for antimatter in this early bubble chamber photo. The magnetic field in this chamber makes negative particles curl left and positive particles curl right. Many electron-positron pairs appear as if from nowhere, but are in fact from photons, which don't leave a trail. Positrons (anti-electrons) behave just like the electrons but curl in the opposite way because they have the opposite charge. (One such electron-positron pair is highlighted.
2)Californium (252 – $24 million/gram)
Californium is a radioactive metallic chemical element with the symbol Cf and atomic number 98. The element was first made at the University of California, Berkeley, in 1950 by bombarding curium with alpha particles.
Symbol: Cf
Electron configuration: Rn 5f10 7s2
Atomic number: 98
Melting point: 898.8 °C
Boiling point: 1,472 °C
Atomic mass: 251 u
Discoverers: Glenn T. Seaborg, Albert Ghiorso
3.Diamond – $56,000/gram
In mineralogy, diamond is a metastable allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is less stable than graphite, but the conversion rate from diamond to graphite is negligible at standard conditions. Diamond is renowned as a material with superlative physical qualities, most of which originate from the strong covalent bonding between its atoms. In particular, diamond has the highest hardness and thermal conductivity of any bulk material. Those properties determine the major industrial application of diamond in cutting and polishing tools and the scientific applications in diamond knives and diamond anvil cells.
4.Tritium – $32,000/gram
Tritium (symbol T or 3H, also known as hydrogen-3) is a radioactive isotope of hydrogen. The nucleus of tritium (sometimes called a triton) contains one proton and two neutrons, whereas the nucleus of protium (by far the most abundant hydrogen isotope) contains one proton and no neutrons. Naturally occurring tritium is extremely rare on Earth, where trace amounts are formed by the interaction of the atmosphere with cosmic rays. The name of this isotope is formed from the Greek word "tritos" meaning "third".
5. Taaffeite – up to $23,000/gram
Taaffeite is named after E.C.R. Taaffe, gemologist of Dublin, Ireland.
Taaffeite forms mauve or lilac, red to brown, bluish, green transparent to translucent crystals.
A. Thomas reports that "Taaffeite is a very rare gem mineral that was first discovered as a cut stone". A light mauve stone was originally believed to be spinel. The source of the material was unknown for a long time, until eventually small fragents were found in Sri Lanka.
A purplish brown chatoyant taaffeite has been found recently in Sri Lanka.
6.Painite – $9300/gram
Painite is named after Arthur Charles Davy Pain, English gem collector who first recognized the mineral.
Painite forms elongated, pseudo-orthorhombic transparent deep garnet-red crystals. Pleochroism is ruby-red and pale brownish orange or pale red-orange.
Painite was recognized as the rarest gem material on Earth, however many more stones have since been found. Many hundred stones have been faceted, but facet rough material of fine quality is still rare.
7.Plutonium – $4100/gram
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