The first Armor of its kind
The new set of armour Quinn was currently wearing was a full set, just like the Blue Fang set. It was hard to come by high-tier sets for a number of reasons, one of them usually being the fact that they needed to be all made from the same type of crystal.
For Quinn himself, he had never had the chance to create an armour set, nor had he come by many that had an armour set. The only reason why he had one was due to Helen in the first place. Which was why it was considered such a big gift at the time.
Due to the way armour sets were made, if a person wanted a demon tier set, rather than just a single piece of item, it meant they would have to try and find the same demon tier beast to create a set. This was more possible with lower-tier crystals as there were usually multiple of the same type.