[kens]

There's no need to ponder the toxicity of gallium nitride and worry about your "sneaking suspicion" that it's toxic. It's in the "may cause skin irritation" level of toxicity, so really not worth worrying about. https://www.ltschem.com/msds/GaN.pdf

[Nasrudith]

That is good to hear. I remembered the mercury resemblance and recalled it as a "mercury lite" toxic. Turns out even pure gallium is pretty mild.

[jacquesm]

> Turns out even pure gallium is pretty mild

It's pretty mild unless it contacts something made of aluminum. Then it's fairly impressively destructive.