I don't remember who posted this, but they said that Spyrestone Bracelets drop more often on lower floors, though most will be weak braces. On higher floors, drop rate is abysmal, but mostly good braces will drop.
Having Spyrestone and Riftskull bracelets be similar to the OW braces would actually be pretty cool
LordyIsBack - Lvl 121+ Warrior
Clan Prophecy (World Danu)
I'm taking a break from CH until the next questline is released. Possibly this next beta.
Since the last post on this thread happened in 2016, guessing a lot has happened since then. I did however farm a spyrestone brace (grand version of tenacity) last night (4/23/22) from a 220 4* mob while elixing in Morrigan server. My toon is a 236, almost 237 level warrior and it is the first one that has dropped for me. Happened in Arcane Sanctum, and from my level, you know I have elixed alot. I have a crazy amount of kills there and my first finally dropped yesterday, so guessing crazy rare. I've even farmed an apostate with a lot less kills to get it to drop.