Purple stones, is it sugilite?

[Currada]

Love your bracelet. Remembered there was a thread on this awhile back. Hope it helps.

Purple spiny vs sugilite?

Anyone have tips for distinguishing between purple spiny oyster and sugilute? Recently acquired a ring with a purple stone so dark as to almost appear black. Pretty sue it’s spiny. I think that is a Derrick Gordon mark. Thoughts? Thanks!! [15764690111971102089500] [1576469084755-1236648777] [15764691478671980997202] [1576469208998793711811]