008v - - - - - 008v - - - - - It is not polished with tripoli but like the others, but with marcasite powder & oil.
You need to calcine your fine gold with ☿ and then wipe your amalgam well & make the said mercury fly off. Next grind it on marble with gum water. As for silver one needs to take it as is & eat away at it with aqua fortis, then take it out with a copper blade & rinse it thoroughly and next grind it with gum water.
There are three wheels for doing this, one of tin, one of lead, & one of fine copper, on the cu copper wheel one does not commonly cut co or polish but the diamond, the ruby, sapphire, & oriental jacinth. The tin wheel is for more tender stones like emerald, amethyst, & others.
Because among the fine tinthey often mix well half of lead, which renders the tin dull. To correct this, they mix in some latten filings to render it sonorous.
Take the most delicate stoneware you can, with a cavity in the middle. Put in an eighth part of ☿ in & rub it & wear it down while adding water, urc, ☾ or ☼ until the substance becomes like paste & even harder. Next, if you want, eat it away with good aqua fortis, if it is ☾ or ♀. Then remelt it, having taken it out as you know. The ☾ will be colored, and having been melted, will leave some grains of ☼, & the ♀ will be very fine & will have almost no chappe.