In terms of abundance in the Earth's crust, the rarest metals are: gold, platinum,
The rest of the metals have a ranking from highest to lowest in terms of abundance. Rhenium, ruthenium, rhodium, iridium, osmium, gold, palladium and silver are the order this comes in.
Rhodium, one of six PGMs, is a silver-white metallic element that is highly reflective and strongly resistant to corrosion. It is considered the rarest and most valuable precious metal in the world — far more so than gold or platinum.
The rarest stable metal is tantalum. The rarest metal on earth is actually francium, but because this unstable element has a half life of a mere 22 minutes, it has no practical use.
1. Rhodium. Rhodium (Rh) is non-radioactive and is the most expensive metal in the world. It is a rare member of the platinum group with a global annual demand of 32 tonnes.
1. RHODIUM: TOP MOST VALUABLE METAL. Rhodium is the most valuable metal and exists within the platinum group of metals.
Rhodium. In the number one spot is rhodium. Catalytic converters, which are a component of vehicle exhaust systems that reduce pollutants and toxic gas emissions, contain rhodium. The global automotive industry accounts for nearly 80% of rhodium and palladium demand, according to S&P Global Platts.
Silver may be more useful industrially, but it is somewhat less rare, so less precious. Rhodium, iridium and ruthenium are perhaps the rarest, roughly 1/5 as common as platinum.
If translated into numbers, platinum—for all of its known deposits—is considerably more rare than gold and is the rarest metal of all.
Iridium is one of the rarest elements on Earth. It is found uncombined in nature in sediments that were deposited by rivers. It is commercially recovered as a by-product of nickel refining. A very thin layer of iridium exists in the Earth's crust.
Exactly what it sounds like! Black rhodium is a dark, metallic gray plating composed of rhodium and other metals that can coat any of our precious metal selections and give them a cool, edgy aesthetic.
1. Rhodium. Rhodium is a rare, silvery-white metal that belongs to the platinum group of elements. It has a high melting point, excellent resistance to corrosion, and is known for its catalytic properties.
Rhodium (Rh) – $15,250/troy ounce. Iridium (Ir) – $4,750/troy ounce. Palladium (Pd) – $2,027/troy ounce.
The most expensive natural element is francium, but it decays so quickly it can't be collected to be sold. If you could buy it, you'd pay billions of dollars for 100 grams. The most expensive natural element that is stable enough to purchase is lutetium. If you order 100 grams of lutetium, it will cost about $10,000.
"Platinum and Palladium Are 30 Times Rarer Than Gold."
Palladium is estimated to be about 15 times rarer than platinum, making it significantly more expensive per ounce. In fact, palladium is currently the most expensive among the four major precious metals (platinum, gold, and silver).
Platinum, palladium, and rhodium are rarer than gold. Iridium, osmium and ruthenium are even rarer than the other three.
Rhodium is a rare, silvery-white metal that belongs to the platinum group metals (PGMs), which also includes platinum, palladium, iridium, osmium, and ruthenium.
Palladium has the appearance of a soft silver-white metal that resembles platinum. It is the least dense and has the lowest melting point of the platinum group metals. It is soft and ductile when annealed and is greatly increased in strength and hardness when cold-worked.
Palladium is currently the most expensive of the four major precious metals - gold, silver, platinum and palladium.
The Heaviest Metal. The heaviest metal is osmium, which has, bulk for bulk, nearly twice the weight of lead. The specific gravity of gold is about 19 1/4, while that of osmium is almost 22 1/2.
Tin, antimony, tantalum and lead are expected to become unavailable before the middle of this century. Tantalum is one of the metals that are currently used as pin-head capacitors in mobile phones and other electronic equipment.