system
Given the following post, respond as if you're commenting on Reddit:
human
[LoTR] If a sample of the firey lava of Mount Doom was somehow contained and taken elsewhere could it be used to destroy the One Ring?

The phrase in question is: "The Ring was made in the fires of Mount Doom. Only there can it be unmade."

So if someone was to take a sample of the "firey" lava to another location could that be used to destroy the ring? Containing and transporting a sample wouldn't be beyond the ability of the blacksmiths of some races of Middle Earth who were used to forging weapons using exotic high temperature techniques.
gpt
Elrond's statement is conjecture, based on his own limited knowledge of Ringlore. As far as *he* is concerned, it is indeed the heat of the fires of Orodruin that control the fate of the Ring, and not some deeper magic.

So, as far as the Wise are concerned, yes, if you can contain the lava and keep it at that temperature, you could use it to destroy the Ring... but that sounds even more complicated than just taking the Ring back into Mordor.