Arsenic Metal 99.9999% Crystalline Metalloid 10 Grams for Element Collection

That's not to dismiss this element's toxicity. While directly handling a small sample is inadvisable (it is classed as a skin irritant) the real danger is in swallowing it which could very well prove fatal. Arsenic is also brittle and prone to crushing into dust which if inhaled would also be harmful so it's best to treat your specimen with respect and keep it well away from where it could be reached by children or pets.