The gold blobs are everywhere! Loads of them in bar shapes coming from Israel, and I'm pretty sure all the ones out of Israel are affiliated, all the auctions look and read mostly the same. For the newbies, if you want to really know what is in these things read below. Here is an example.
http://www.ebay.com/itm/100-grams-Gold-Recovery-Gold-Bar-Melted-Drop-Scrap-Plated-Computer-Pins-CPU-Mixe-/281299708537?pt=LH_DefaultDomain_0&hash=item417ec4ea79
I know these are bad for refining but was trying to get some nicely colored ones in specific sizes to make an art piece and didn't feel like gathering the material and making them myself because it seemed so wasteful to melt a bunch of pins into a blob, plus I was curious to see what exactly they were like in person. I contacted one of these sellers (forget which one, but I could look it up). He told me that are from old military communications stuff supposedly, which I didn't really care (well I do, if left whole you probably could get a good yield out of it, I think they're only selling it as blobs because it looks attractive).
He was pretty nice to talk to and sent some on the cheap plus a freebie. My buddy wanted to try refining it so I let him, I personally didn't have the patience or desire. The yield was fairly low, the price they're selling them for is nearly exactly at the spot gold price plus a slight premium for the yield based on our estimate, which depends on if the yield is consistent from one bar to the next as well. It takes a boatload of effort to do too, and wastes a lot of materials. Most of the rest of the blob was copper. Yield was close to 4 grains from a 35g block. I figured its a good lesson for the newbies. If the seller is honest and really melting stuff with a decent yield, you might get something like a couple of grams out of 500 grams of the stuff, but would never do a profit trying to extract it, unless the price of gold skyrocketed.
For the most part, the thing is mostly copper, unless you want to speculate on copper prices and store it in a gold coloured bar form. :mrgreen: