I swapped the Rinascita Sword (from paladin) & the Hellhound Tuck offhand onto the Mythrite Rapier (rdm starter weapon) and then recolored it. The sword became more silver and the crystal became blue. It looks like it's made from the crystal tower. You can use the Textools tool "Item Converter" to swap the modified Mythrite Rapier onto any rdm weapon you like. If you swap it onto a dyable weapon, the crystal should change color accordingly. The armor / gearset in the picture is: https://www.xivmodarchive.com/modid/68167
Primary File or Link:
MythriteRapierToRinascitaSword&BlueCrystal.ttmp2 : [ via Direct Download ]