Gold is bought by weight , and it does not matter what form it is in. It must also be assayed for purity to determine value.
While the above is true about weight, not many "gold buying" companies will take dust unless it is a lot of it , and is packaged professionally ( not in a ziplock bag, nor in a srew top jar as a lot of edible gold is sold in. That said,
If you have a few grams of 22.3 karat edible gold , or higher karat gold powder and are not a jeweler with a refinery account you would do better as far as getting the daily spot price plus a premium on top of that (for the process- as powdered gold is more expensive than a bar of fine gold of the same weight ) by selling your item on ebay , or craig'slist type sites.Not only would foodies be interested but those experimenting with metal clays, pottery glazes, glass making etc..all of which use powdered gold in either food, or art or craft.
If you still want to form it into an ingot a butane torch and charcoal block will do the trick.Fine gold melts fairly rapidly with the 2400+ degrees those torches generate, slightlyover 1900 is required to melt gold..If you don't have that equipment but have a jeweler's supply near you buy the harder charcoal block ( about 10 bucks ) as it will last longer:
My point is, selling it as powdered gold will get you more than the value if you advertise it yourself..Look at edible gold sites and powdered metals sites to get an idea of current prices for powdered gold of high purity.If you have taken some credit suisse bars and dissolved them in nitric acid or aqua regia, or stolen it from a chem lab, and try to precipitate the gold out with oxalic acid and that is the powder you are trying to sell..the purity will be questionable, not to mention the amount recovered may not be the amount the solution contained..I could say alot more on the subject but noit knowing the source,weight, or fineness of the material , nor how it was powdered or the particle size- I'll just stop here...
A Gold Genie wheels are nice, for non-tonic recovery use water only.
now for the other types of gold recovery . Charge Mercury will pick up and hold 60% of its weight in Gold.
Though i would not do this un-less you have a real reason to do this type of fine gold recovery.
Sluice box works great....with a carpet of real lambs wool to pick out the micron fines.
in the world we live in now keep it clean.
Save all Black sand and send it in for smelting, as black sand well coat gold and you can`t tell in the flied what you have..
myself i work all black sand at home........
Cyanide leech ponds...........don`t go there.
The government well bond your site to the point that the cost will be at least 400 Oz. to recover gold.
Answering "How do you separate fine gold?"Your Question has been....Be safe !!!
Dehydrate pineapple pieces then place in blender to powder.
flour
flour
Flour
Feed him some Gold powder.
I make mine into a fine powder and it is great to snort!
your butt stinks
Depends upon the make and style of the jewelry. Thick, chunky, big stuff will add up a lot faster than tiny, delicate super-fine wire pieces.
Yes, but only if the shavings could be ground into a fine powder
There are many powders to make cakes but the most used is probably flour
Deseed the fresh amla or gooseberry. Dry it in the sun. once it is dried up, grind it up to a fine powder. This can be used for consumption or for the hair.
they broke little pieces to make ingots