Today's haul from cap blanc nez, France. Ammonites with ammolite, what do you suggest I do to keep the ammolite from losing colour?

What is this stone?

Azurite on Green Malachite

What's this red porous rock I found in a beach

Can’t figure this one out. I can’t remember where I found it. Maybe glacier national park.

saw these at an antique shop, i have a jar of them that i found, i dont think they are coral?

I love shinny rocks

My first specimen ( new to the hobby)

Found the Stone

Ramon crater colors park. Don’t know what I’m looking at, but it sure is pretty (and crumbly)

Ammolite With Beautiful Pattern

What kind of rock is this? I found this at the river while collecting sand for House construction. The light pass through using flashlight. And it doesn't scratch after using knife.

Stuur maar naar ons filiaal in Midden-Aarde

What is this rock

This rock I found cleaning out a coworkers desk

Just caught this from my weekly Research Breakthrough!

Found in a riverbed in central Europe. Cool to the touch, probably made of stone. About 3 cm in length.

Wisconsin law is clear you can't park within 10 feet of a Fire Hydrant.

Absolutely horrendous graph by the Athletic

Malachite with azurite from the Metcalf Mine, Clifton, Greenlee Co., Arizona. Most of the larger orbs pictured are less than 2mm across.

is it calcite?

Obligatory "IS THIS A GOLD NUGGET?"

Neighbor owns a Ferrari Testarossa, my dream car. It appears to have exploded last night.

Found this rock in Zeeland, on the beach in the Netherlands. It is very light, we cut it open and it is just aluminium inside. Was thinking it is some kind of slag but have no idea really. The white (calcite?) is brittle, and there are clams on the rock.

ID small stone from bag river stones from garden center in EU?