Can't really see from your photo but these "blueberry" gorgs have a very distinct polyp shape. I am assuming your purple one has the same polyp shape. You can readily see the shape in the 2nd photo.
All i can tell you is that "blueberry gorgonian" is a common name and when used it usually refers to those gorgonians with the distinctive light blue polyps.
Acalycigorgia which is commonly used as a genus identifier is not accept (see the WoRMS site and the UNESCO site). The reference genus is Acanthogorgia.
I tried to look up a few pictures of different Acanthogorgia species - they do have different coloured polyps - so if the polyps are purple then it may be a difference species. If the polyp is a completely different shape - it may be a completely different genus altogether.
The submissions for a lot of the Acanthogorgia species (there are lots) go back to before colour photos so its hard to get a picture of the exact species.
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