This was 4 pounds of agate/glass/coral/wood/clear quartz with 4 pounds of pea gravel media in a vibe.
The dozen 50 gram agates and quartz nuggets slightly bruised the glass and quartz nuggets even though 50% protective pea gravel smalls were mixed in.
Regardless, polish is excellent but the glass and quartz nuggets are unacceptable due to random bruises spread out over their surface.
Point being, this is the folly of tossing big rocks in with glass for sure, perhaps most smaller softer materials also.
If running glass I try to keep all pieces less than 25 grams and stay away from the potentially destructive larger stones.
See random bruises on large quartz nugget in front:
The Mohs 7 agate/wood/coral all have ripping polish with zero bruises. They are simply more resilient.
The whole 4 pounds less the 4 pounds of pea gravel:
Next vibe load started Sunday morn.
This fine BC jade is not going to polish in the vibe. Running gently with small pieces of glass and lots of pea gravel media. 48 hours in AO 220.
Reflective test, glass reflecting forest images in background, jade showing no organized reflected image. Wasting time getting a tumble polish on the jade.