Blue Apatite is a calcium phosphate [Ca₅(PO₄)₃(F

oxidizing to hematite and staining the rock in tones ranging from pale ochre to deep brick red

A display bowl for a bedside table

Deep red quartz-hard stone set in a round silver band

Named in the late 18th century from the Greek kyanos (blue)

Peridot Palm Stone Purification Blue Apatite is a calciumThe green of deep mantle rock, held in the palmperidot is one of the few gems that forms below the crust. Peridot is the gem variety of olivine, a magnesium iron silicate ((Mg,Fe)2SiO4) that crystallizes in the upper mantle and reaches the surface through volcanic activity or in xenoliths carried by basaltic magma. Its vivid yellow green color is an intrinsic property of the iron in its crystal structurethe color is built into the mineral's chemistry