#armor
execute as @a[nbt={Inventory:[{id:"minecraft:netherite_helmet"}]}] run give @s diamond_helmet 1
execute as @a[nbt={Inventory:[{id:"minecraft:netherite_chestplate"}]}] run give @s diamond_chestplate 1
execute as @a[nbt={Inventory:[{id:"minecraft:netherite_leggings"}]}] run give @s diamond_leggings 1
execute as @a[nbt={Inventory:[{id:"minecraft:netherite_boots"}]}] run give @s diamond_boots 1

#refund netherite ingot
execute as @a[nbt={Inventory:[{id:"minecraft:netherite_helmet"}]}] run give @s netherite_ingot 1
execute as @a[nbt={Inventory:[{id:"minecraft:netherite_chestplate"}]}] run give @s netherite_ingot 1
execute as @a[nbt={Inventory:[{id:"minecraft:netherite_leggings"}]}] run give @s netherite_ingot 1
execute as @a[nbt={Inventory:[{id:"minecraft:netherite_boots"}]}] run give @s netherite_ingot 1

#clear everything
clear @a[nbt={Inventory:[{id:"minecraft:netherite_helmet"}]}] netherite_helmet 1
clear @a[nbt={Inventory:[{id:"minecraft:netherite_chestplate"}]}] netherite_chestplate 1
clear @a[nbt={Inventory:[{id:"minecraft:netherite_leggings"}]}] netherite_leggings 1
clear @a[nbt={Inventory:[{id:"minecraft:netherite_boots"}]}] netherite_boots 1