I am still at it after 2 warrentee replacement tumblers from National Geographic since March plus a freebie Pro model.
I crushed tumbler size stones from rough Turritella Agates
From SE Wyoming
After 6 weeks and 5 stages of grit (60, 220, 500, & 950 course silicon dioxide then 1200 aluminum oxide polish then ‘Gem Foam’® for burnishing)
𝔾𝕠𝕤𝕙 𝕥𝕙𝕖𝕪 𝕤𝕦𝕣𝕖 𝕔𝕒𝕞𝕖 𝕠𝕦𝕥 𝕡𝕣𝕖𝕥𝕥𝕪 😉
I have never seen a cat smile before today 😸