New evidence for the Arkenstone-Silmaril case

[Inziladun]

I haven’t examined this thread thoroughly enough to know if this quote has been added already, but it seems to lay the matter to rest.

The Noldor also it was who first achieved the making of gems; and the fairest of all gems were the Silmarils, and they are lost.

The Silmarillion Of the Beginning of Days

How much more finality does one require?