No.
It is a miniaturized arc reactor. There is a big one in his factory.
An arc reactor is a fictional power source in the Marvel Comics universe, notably used by Tony Stark (Iron Man) to power his suit and other technological inventions. It generates energy by converting electricity into a near-limitless supply of power.
****SPOILERS FROM IRON MAN 2**** The Paladium core used in his original arc reactor starts poisoning his blood, and so he eventually develops a new element that the arc reactor can run off, which is triangle shaped.
approx 4.25 inc or 114mm in diameter, chest, the one in his factory, unknow.
It is because it is the new Arc Reactor for the Ironman suit. The old one had palladium, which poisoned his blood. He then discovered a new element, which worked perfectly for the new reactor.
It's called an Arc Reactor. In the movie, it's clean energy source that powers his suit. But more importantly, it powers the electromagnet that protects Stark's heart from the shrapnel embedded in his chest. However, the second movie reveals the arc embedded in Stark's chest is made of palladium, which is slowly poisoning him.
Shrapnel reaching his heart in the first movie, and paladium in his heart (from his micro arc reactor in his chest) poisoned him and killing him, in Iron-Man 2.
a arc reactor is a circle shaped object in the movie iron man. it helps in keeping tony alive and control the iron man suit.
The arc reactor.
Arc Reactor
While it is possible to create a replica of Ironman's Arc Reactor for cosplay or display purposes, it is not feasible to recreate a functional version like the one in the movie. The Arc Reactor in the movie is a fictional power source designed for Tony Stark's suit and is not based on real technology.
tony stark's arc reactor