Install guide -

Extract both folders and the ESP into:
Steam\steamapps\common\Skyrim Special Edition\Data

Uninstall:
Remove the following

Skyrim Special Edition\Data\textures\weapons\diamondsword
Skyrim Special Edition\Data\meshes\weapons\diamondsword
Skyrim Special Edition\Data\diamondsword.esp

How to obtain;
Crafting [Category - MISC]: Firewood (x1), Diamond (x2)

OR

Go into your console, type the following commands
help "diamond" (look for the ID of the diamond sword in the list)
player.additem <swordID> <amount>

If you have any questions or see any bugs, just contact me on Skyrim Nexus.
Please do not upload this mod anywhere else without prior permission.
Disclaimer: I am not responsible if this mod corrupts your saves/game content or damages your PC/Console in any way shape or form.

Thanks,
~Arky (ArkAngel114)

v1.1:
Updated for Skyrim: Special Edition
Removed blood effects on sword. I could not get the blood effects to render on the sword properly, so now you'll always have a clean diamond sword!
Reduced specularity on sword so it's not overly shiny in the inventory menu
Ported for Consoles