Mohs (scale of harness) 5 They are to soft to tumble in stage #1 Course grit (60/90 Silicon Dioxide) The stones would have 30% of their size ground away ❗️
Soo…I start them on stage #2 Medium grit (170/220 Silicon Dioxide for 4 to 5 days instead of 7-8 days )
Then stage #3 Pre-Polish grit (500+ Silicon Dioxide for 4-5 days)
Stage #4 Polish grit (1200+ Aluminum Oxide for one week (Al O¹ breaks down after 7 days of tumbling)) So clean and add fresh polish and run another 7 days if needed.
𝕀𝕥 𝕀𝕤 𝕆𝕂 𝕥𝕠 𝕡𝕖𝕖𝕜 𝕒𝕥 𝕪𝕠𝕦𝕣 𝕣𝕠𝕔𝕜𝕤 𝕖𝕧𝕖𝕣𝕪 𝕔𝕠𝕦𝕡𝕝𝕖-𝕗𝕖𝕨 𝕕𝕒𝕪𝕤 to √ Progress in each stage
Now Stage #5 Gem-Foam ( Magic little ‘sponge cubes’ ⚗❓) for 2 or 3 days and your rocks will come out shinier then ‘oleo’ on a glass door knob whilst not slippery to the touch 😉