Post a picture (or more) of the items you have for sale, it will give a lot more credibility to a first post where you are offering such 'treasure'.
The pictures should show the types and weights of each 'batch', with the result from the pictures being easy to see just how you came up with "5lbs of 24k gold" (certainly not likely from 8 lbs of jewelry, but perhaps - that's why a bit more justification is needed).
Being a first post, you really should be more public with information - asking for a private contact sounds like a 'hook'.
If you are serious about selling this lot and it is as you say, then post the pictures as described and you will likely get some private inquires. Certainly there are buyers here ready for such a purchase, as well as refiners that might process it for a percentage. However, you stating that you have 24k gold jewelry makes me think you either 1. don't know what you are talking about (as butcher stated, there is no 24k gold jewelry, at least, not in quantity or common circulation [my wife has a tiny set of earings that are quite old from Russia - claims to be 24k and they are super soft, but I have my doubts on them as well...]) or 2. have a scam going => in either case, seems you likely want a lot more for the lot than it is actually worth.
Present yourself and your lot with integrity and honesty (if you don't know, that's fine, just state it - we all had to learn somewhere!) and you'll get a lot more positive responses.