Stone/Debris/Fragment Set Armors

For now we have the Obsidian Shard, Red Spot Shard, Moonstone Fragments, Turquoise Debris, Shiryu Stone Debris, Yellow Crystallite Debris and the Blue Crystal Debris, these items are used to buy the "Shard/Debris Set Armors" from the "Mysterious Merchants/Vendors" see image below where these npc's are located.

I have marked the location of the npc's on the map with an arrow.