Best rock tumbling polish for step 4

What the listing offers

• The listing states 1200 grit aluminum oxide polish for step 4, used after step 3 fine grinding.
• Gives a usage ratio: about 1 oz of polish per pound of rocks, for up to approximately 80 lb of rocks.
• Listed as compatible with most standard rotary and vibratory rock tumblers.

Limits to know

• 5 lb of polish is more than a small 3 lb barrel is likely to use in a short time.
• Container type and country of origin are not stated in the listing details used for this guide.

What the listing offers

• The listing states 2 pounds of final polish 1500 fine aluminum oxide.
• The listing says the polish is packaged in a wide-mouth container.
• Listed for final polishing of pre-polished rocks (step 4), with any brand of rock tumbler.

Limits to know

• The title is a generic one shared across steps and mentions silicon carbide; only the bullets name the polish.
• No country of origin, usage amounts or instructions are given in the listing.

What the listing offers

• The listing states sub-micron 12,000 grit aluminum oxide for the final stage of rock tumbling.
• Listed as suitable for most rock tumblers, including rotary and vibratory machines.
• The listing says it is offered by a USA-based, disabled and veteran-owned company.

Limits to know

• Only 1 lb, and the listing gives no amount per pound of rock or run time.
• The container type is not stated, and no particle size in microns is given beyond sub-micron.

What the listing offers

• The listing states two 1/2 lb jars holding 1 lb of final polish 1200 fine aluminum oxide in total.
• Packed in re-usable jars, which the listing says prevent spills and store unused product.
• Listed as made in the USA by an American company using American sourced materials.

Limits to know

• 1 lb in total is a small pack, so anyone tumbling often will reorder soon.
• 1200 grit is the same grade many kits include, so it is a refill and not a finer polish.

What the listing offers

• The listing states 8 pounds of final polish 1500 fine aluminum oxide for step 4.
• Listed as compatible with any brand of rock tumbler.
• The largest pack among the single-step polishes compared in this guide.

Limits to know

• The listing does not describe the container or how the 8 lb is packed.
• Four short bullets only: no country of origin, usage amounts or instructions are given.

What the listing offers

• The listing states 1 pound of light yellow cerium oxide polish for rocks and glass.
• The listing gives the purity as 99.9% cerium oxide.
• Listed for wheels, belts and flat laps with cotton duck or leather, and for rock tumblers.

Limits to know

• No particle size or grit number is stated, so it cannot be compared by fineness.
• The listing gives no tumbler amounts or run time, and the container is not described.

What the listing offers

• The listing states 8000 grit sub-micron aluminum oxide polish in a 1 lb pack.
• The listing says to use it after a regular 800 to 1500 grit polish, not instead of it.
• Usage is given: about 2 scoops per batch, water to just cover the stones, 3 to 5 days.

Limits to know

• It is an extra cycle after step 4, so a regular polish still has to be bought and run first.
• The amount is given in scoops with no scoop size, and the container is not described.