Judging quality
Look for a dark fusion crust, a lighter interior with visible metal flecks, and chondrules on a cut face. A magnet responds; a streak on porcelain should be absent or faint. Terrestrial slag streaks strongly and often has bubbles.
Meteorite
The most common meteorite type and the oldest rock anyone can hold: stony material containing chondrules, millimetre droplets of melt that condensed 4.56 billion years ago before the planets existed.

Look for a dark fusion crust, a lighter interior with visible metal flecks, and chondrules on a cut face. A magnet responds; a streak on porcelain should be absent or faint. Terrestrial slag streaks strongly and often has bubbles.
Keep dry; iron content rusts in humidity. Silica gel in the display case.
The Chelyabinsk fall of 2013 was recorded on hundreds of dashcams and is the best-documented meteorite event in history.
Cultural history, recorded as tradition rather than as medical or scientific claim.
See it in person
Both rooms are open six days a week, and there is always someone happy to pull pieces out of the case so you can compare them under the light.