Warp: cotton, centre part thick and thin (it gave me an idea of coverage), outside edges cotton
Weft: one thread cream cotton, several gold lurex.
One thick, two thin threads per dent 12 dent reed.
I tried spreading the warp out to the equivalent of three threads per dent in a ten dent reed which was a nicer feel but the gaps didn't close up so the pattern was compromised.
The experiments continue.