Ok I get that so if I’m after jewelry wish ssi dci hci on it would I need to find a piece with all that on there and add by id?
No, each piece of jewelry has its unique ID.
Or do I still need to just loot all jewelry and go through it manually?
Yes :/
The IDs is how the game can actually know that one sword has like SSI while another sword of the same looks has DI instead. Think of a list of all the world objects in UO:
ID 1: longsword (item type 1), DI, Repond slayer
ID 2: longsword (item type 1), SSI, Demon slayer, 100% fire
ID 3: shield (item type 2), DCI
ID 4: gold (item type 3), amount 3000
ID 5: gold (item type 3), amount 1500
etc.
For your case you can only filter all jewelry by adding the item type of jewelry. Rings, earrings, bracelets and necklaces should have each an own item type. To further filter for specific item mods you would need to do a bit of programming (afaik). Maybe Pincos can do it, but I really dont know.