This is a short story of an exciting and quite unnerving adventure i started in mid-december. I tried casting silver. First try, knowledge from the internet and some experience from inorganic technology.
Modeling the jewel, was a bit more trickier than expected, as I had to fix a quarz pearl in the middle. i got some experience with clay by now and managed fine. yay.
I made a rubber mold, I melted some wax in a water bath and cast a wax positive.
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This wax positive was embedded in gypsum. I drilled holes to get the silver in, and get the hot air out through another hole. That worked well.
All I had to do was buy some silver, melt it (Mp: 960 ºC) and pour it into the gypsum mold right?
great, lets do it... But the stupid silver wouldn't go inside! Damn. Start over!
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Well new gypsum mold, which is open on the top. Should work fine. I fixed the pearl with a screw, heated the gypsum with a hotgun, until the gypsum got yellow&black, and poured the silver again.
Unfortunately silver is such a good heat conductor, that the silver wouldn't fill the mold as it cooled too quick, and all i got was a silver blob embedding the pearl and the screw....
It took me two more days to drill a shape out of the blob using a multitool.
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Yay well that's it. If you'd like to try that, you should come up with a better plan and let me know how it worked!