How do you cast a rock? Does it burn out?
I guess she cast it with Delft clay, or praps cuttlefish.
If it was me that cast a carved rock in fine sil I’c cut the sprue
off (I assume it’s quite a hefty sprue for such a volume) and either
file it straight and polish it so it’s kind of obvious what it was, or
try to disguise it by copying the same ‘rock’ texture. A burr right on
that one place might do this better and quicker than tumbling, which
would affect the rest of the stone. Do a random pattern with a big
ball burr. Use a coarse burr: fine silver’s softer than 925 so it
might clog up a fine burr.
Or how about this: cast a second one, take a piece from that and use
it as a plug on the first casting where the sprue was. Fancy.
B r i a n � A d a m