They're the EXACT same crystals; Razer crystals have a different name, are Bind on Pickup (can't be sold) & very rare. The low value is due to everyone stockpiling crystals during the event since all you had to do was sit AFK at fleet to earn them, something plenty of people do anyway.
Ahh, well that's discouraging. I guess my investment wasn't a very good one if that's the case. Maybe I'll re-retire them to my cargo hold in that case.