Product Type: Prehnite

This specimen of Mexican Magnetite is heavily decorated with superbly formed octahedral magnetite crystals

It forms prismatic crystals with a variety of colors including white

Mesosiderites are formed on the surface of a parent body as a result of impacts with another body

Pseudomorph Turquoise After Apatite | Perky Box Thumbnail Specimen | Sonora, Mexico Sillimanite Product Type: PrehniteA pseudomorph occurs when one mineral replaces another but retains the original mineral's crystal structure. In the case of turquoise after apatite pseudomorph, turquoise replaces apatite, but it still retains apatite's crystal shape. This process leads to a visually fascinating specimen where the exterior shape looks like apatite crystals, but the composition and color are distinctly turquoise, often with the bright blue or green shades typical of