Hello facetors, a, having trouble Emerald cutting a Kunzite. Cleavage is the main problem all help is appreciated.
You can orient the rough differently to keep the cleavage plane off of your cutting direction by 5 degrees or more. And/or you can cut with a finer grit than you normally would. Perhaps you rough cut with a 600 grit and facet with 1200 or even 3000. The second thing is don’t use pressure or high speed during cutting. I cut kunzite at about 300 rpm and the lightest pressure. It takes a lot longer, but usually keeps the stone from fracturing along the cleavage plane.
Thanks for the help.