grey and green tinted

Dimensions:  36x20x19 mm / 1

or even vibrant hues like pink

Specimen Size:  Thumbnail-Sized  Dimensions:   Specimen 28x14 mm / 1

Dimensions: 67x40x39mm / 2

Olivine Volcanic Bomb | Lava Coated Crystal | 254.5 gr | Mt Shadwell Volcano, Australia | SO24 Molybdenite grey and green tintedAn 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