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Thanks, these are the type I was going to try but want too sure if they'd crack or chip the acre. I've read normal drill bits can crack pearls.

hi all, I'm new to pearls but was wanting to see if I could drill them myself. I'll only be doing holes half way through to start with. My question is what type of bits do you use to drill pearls? I've seen spiral drill bits, triangle shaped bits and grinding bits.