@Wizards_DnD , @DnDBeyond , @SageAdviceDnD , @mikemearls , @JeremyECrawford Not RAW, Not RAI, but a Lore question: Are item made of Mithral and/or Adamantine metals enchantable or does their innate magical essence block/push out other magical attempting to infuse with the item?

— Daniel Clay Floyd (@Harcagnel) October 19, 2018

That’s exactly what I was looking for! We are playing forgotten realms and while I will not be handing out magically enchanted mithral or adamantine but I was considering letting players go on a quest for a specialist but wanted to keep canon even if homebrew. Awesome! thank you! A pleasure! (BTW: my "those who know how" phrase means: mithral, adamantine, and various other 'special' substances require unique, rejiggered enchantments to be endowed with a dweomer at all, or a lasting one (i.e. if not done right, they'll be magical for a short time only).

— Ed Greenwood (@TheEdVerse) October 20, 2018