Chalcedony is a microcrystalline Quartz found in many different colours and patterns

Color-change fluorite can exhibit a range of colors

This nice specimen of anorthositic (anorth) Lunar is 1 of only 78 approved meteorites classified as such

Here we have for you a nice looking individual fragment of a Sahara Desert NWA unclassified meteorite weighing 121

Its dimensions are 27x19x11 mm

Olivine Volcanic Bomb | Lava Rock Crystal | 60 gr | Mt Shadwell Volcano, Australia | SO24 Chondrite Chalcedony is a microcrystalline QuartzAn olivine volcanic bomb is a type of volcanic rock that contains olivine crystals and has been ejected during a volcanic eruption. Olivine is a mineral that is commonly found in the Earth's mantle and is one of the first minerals to crystallize as magma cools. Volcanic bombs are large clots of lava that are ejected from a volcano during an explosive eruption. They can vary in size, and their shapes are often streamlined due to their molten nature as