I have 8 bags of very fine natural spun silk hanks (210/2) in the original packaging - (what was I thinking!!). This yarn is 59,600 ypp, so if you wanted to do some really really fine weaving, this is for you.
Including the plastic bag the weights are as follows:
5 x 6.75 ounces
1 x 6.875 ounces
1 x 7 ounces
1 x 6.25 ounces
The total comes to just under 44 ounces.
A similar slightly finer silk goes for $70 per 7 oz cone from Treenway. $175 including shipping