is a chemical element with the chemical symbol Pt and
an atomic number of 78. Its name is derived from the Spanish
term platina del Pinto, which is literally translated
into "little silver of the Pinto River." It
is in Group 10 of the periodic table of elements. A dense,
malleable, ductile, precious, gray-white transition metal,
platinum is resistant to corrosion and occurs in some
nickel and copper ores along with some native deposits.
Platinum is used in jewelry, laboratory equipment, electrical
contacts and electrodes, platinum resistance thermometers,
dentistry equipment, and catalytic converters.
is a chemical element that is a rare, silvery-white, hard
and chemically inert transition metal and a member of
the platinum group.
Gold is a chemical element with the
symbol Au (from Latin: aurum, "shining dawn",
hence adjective, aureate) and an atomic number of 79.
It has been a highly sought-after precious metal for coinage,
jewelry, and other arts since the beginning of recorded
history. The metal occurs as nuggets or grains in rocks,
in veins and in alluvial deposits.
is the chemical element with atomic number 77, and is
represented by the symbol Ir.
is a chemical element that has the symbol Os and atomic
number 76. Osmium is a hard, brittle, blue-gray or blue-black
transition metal in the platinum family, and is the densest
is a chemical element with the chemical symbol Pd and
an atomic number of 46. Palladium is a rare and lustrous
silvery-white metal that was discovered in 1803 by William
Hyde Wollaston, who named it after the asteroid Pallas,
which was named after the epithet of the Greek goddess
Athena, acquired by her when she slew Pallas.
is a chemical element with the symbol Re and atomic number
75. It is a silvery-white, heavy, third-row transition
metal in group 7 of the periodic table. With an average
concentration of 1 part per billion (ppb), rhenium is
one of the rarest elements in the Earth's crust. The free
element has the third-highest melting point of any element,
exceeded only by tungsten and carbon. Rhenium resembles
manganese chemically and is obtained as a by-product of
molybdenum and copper refinement. Rhenium shows in its
compounds a wide variety of oxidation states ranging from
-1 to +7.
is the chemical element with the atomic number 44, and
is represented by the symbol Ru. It is a rare transition
metal of the platinum group of the periodic table; and
like the other metals of the platinum group, ruthenium
is chemically inert to most other chemicals. The Russian
scientist Karl Klaus discovered the element in 1844 and
named it after Ruthenia, the Latin word for Rus'. Ruthenium
is found associated with platinum ores. Ruthenium is a
minor component in these ores and therefore is a relatively
rare element. Most ruthenium is used for wear-resistant
electrical contacts and the production of thick-film resistors.
Another, minor application of ruthenium is its use in
some platinum alloys.
is a chemical element with the symbol Ge and atomic number
32. It is a lustrous, hard, grayish-white metalloid in the
carbon group, chemically similar to its group neighbors
tin and silicon. Germanium has five naturally occurring
isotopes ranging in atomic mass number from 70 to 76. It
forms a large number of organometallic compounds, including
tetraethylgermane and isobutylgermane.
is the chemical element with the symbol Be and atomic number
4. A bivalent element, beryllium is found naturally only
combined with other elements in minerals. Notable gemstones
which contain beryllium include beryl (aquamarine, emerald)
Silver is a metallic chemical element with
the chemical symbol Ag (Latin: argentum, from the Indo-European
root *arg- for "white" or "shining")
and atomic number 47. A soft, white, lustrous transition
metal, it has the highest electrical conductivity of any
element and the highest thermal conductivity of any metal.
The metal occurs naturally in its pure, free form (native
silver), as an alloy with gold and other metals, and in
minerals such as argentite and chlorargyrite. Most silver
is produced as a by-product of copper, gold, lead, and zinc
19000 ppb $425/kg $413/kg
250 ppb $325/kg $520/kg
1 ppb ˜ $158.70/kg
85 ppb $18.90/kg $15.95/kg
8.5 ppb $15.40/kg $18.19/kg