I recently watched this Kurzgesagt video exploring the question of what would happen if you had a black hole the size of a coin.
To summarize the video:
A black hole with the MASS of a coin would have a radius 10^-30m and would decay by Hawking Radiation in 10^-23 seconds with the explosive force of 450 terajoules.
A black hole with the SIZE of a coin would have a mass comparable to Earth and become a dominant gravitational force in the Earth-moon system, passing into the Earth as the Earth begins to orbit it. It wouldn't 'fall' directly inwards, but slightly and then carve out rings of material as the Earth orbits around their shared center of gravity. (2:04 in video). Earth would later collapse into a disk of hot rock. Length of dissipation via Hawking Radiation is not specified.
I want to know if it's possible for the black hole to be created, begin to 'sink' into and consume the planet, only to dissipate before it really begins to destroy the planet.
I guess the outcome I'm looking for is a big, scarily deep hole in the ground with a diameter of several kilometers.
I think the main thing to consider here is would Hawking Radiation be able to overcome the additional mass that the black hole is taking on?
I'm more interested in the hard science behind the formation of the hole than the stability of the hole itself.