6. Lutetium – $69 Per Gram
This heaviest, rarest, and most expensive lanthanide element sometimes used as a catalyst in the petroleum industry. You can observe its uses in alkylation, hydrogenation, and polymerization applications.
7. Lanthanum – $64 Per Gram
Lanthanum is a silvery-white metallic soft element that you can cut it with a knife. It is very rare and occurs in very small amounts. Lanthanum accumulates in soils and water soils gradually which will eventually lead to increasing concentrations in humans, animals and soil particles.
You can see its applications in developing carbon arc lamps for studio lights and projectors, used as electron cathodes, catalysts, ignition elements in lighters and torches, scintillators, GTAW electrodes, and other things. The cost of this element is quite high due to its rarity.
8. Platinum – $60 Per Gram
Platinum has remarkable resistance to corrosion, even at high temperatures. Only a few hundred tonnes are available annually due to its rarity. Its main applications are in jewelry, automobiles, dentistry and even medicine.
9. Rhodium – $58 Per Gram
This rare and precious element is 10 to 25 times more expensive than gold. Rhodium is highly reflective and is harder than gold. The major use of rhodium is in automobiles. The applications of rhodium are in jewelry, phonograph needles, furnace windings, pen nibs, and electrodes for aircraft spark plugs, high-temperature thermocouple and resistance wires, bearings and electrical contacts.
10. Gold – $56 Per Gram
I need not say about the price of gold. People save each rupee to buy gold. Every ancient civilization on earth considered this metal to be valuable. It is one of the most demanded rare earth elements which is bright, slightly reddish, soft, malleable, and ductile in its purest form.
Do you know any other elements which are rare and expensive that are not included in the list? If so, share us in the comments. Check out the expensive flowers in the world.