Nightmare secret dungeon

Hello,

On the boss of nightmare secret dungeon i obtained a stone that i can‘t see in the bag (seems like an upgrade of the nightmare stones)
Did i loose that item or is it hidden / for next update ?

You can see it here!

And it's an item you need to raise the transcendental level of a hero in an ancient hero statue.

NANOO GAMES

You can see it here!And it's an item you need to raise the transcendental level of a hero in an anci...

Hello ! Thanks for your answer, but im not asking for that one, i already know it :)

I am referring to this one i cant find it in inventory and already obtianed a few times (nightmare secret dungeon boss drop)

Killum

Hello ! Thanks for your answer, but im not asking for that one, i already know it :) I am referri...

Ah! It's a dimensional stone. It’ll be used at new System. But shouldn’t be drop now. It’s a bug. :)

NANOO GAMES

Ah! It's a dimensional stone. It’ll be used at new System. But shouldn’t be drop now. It’s a bug. :)

Oh, ok, sounds great !

I have already cleared 4 of those hard secret dungeons in nightmare mode but didnt get any rewards for that effort cause the item isnt available yet,
Is it saved for later or can i have a compensation in nightmare gems or transcend stones ? Thanks :)