if you want your crystal to glow, consider using a tritium keychain. They're available in a number of colors and are very small.
From what I understand, they're not dangerous though they are radioactive. They emit a glow and will do so for a number of years (10 to 20).
Despite their alleged safety, I'm not able to find any on-line retailers who sells them.
I just think it would be cool to have a glowing crystal core for someone's saber.
thanks for reading!
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