`job_item_flags3` bits 13 to 20 indicate some hidden adjectives including `gem` and `stone` items

[Cubittus]

I noticed job_item_flags3 bit 20 of a cut gems job item was set, which led me to check the other unknown bits.
I found a number of adjectives that don't appear in the list on the work order window:

bit	adjective	where found to be used
13	on-ground
14	divine
15	artifact
16	wooden
17	stone	job items for polish stones jobs and encrusting with polished stones
18	non-artifact
19	woven
20	gem	job items for cut gems jobs and encrusting with cut gems

These were found by toggling the bits of job_item_flags3 in a manager_order_condition_item of an open work order.

The stone and gem flags are used for job items in jobs created in a Jewelers workshop.
The suggested conditions for cut gems and polish stones work orders also use these bits. Creating gem cut gems and stone cut gems conditions manually is impossible as the adjectives are not listed.