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or neutral décor
a microcrystalline form of quartz (SiO2) within the silicate mineral class
Color: Golden yellow
Phosphosiderite’s lilac saturation is the result of a unique iron-phosphate molecular structure (FePO4 · 2H2O)
Sardonyx Egg - 2in. - Intuitively selected Iron Phosphate or neutral décorGeological Overview Sardonyx is a specialized variant of onyx, which itself is a banded variety of chalcedony (a cryptocrystalline form of silica, SiO2). Geologically, Sardonyx is defined by its alternating layers of sarda brownish red chalcedony coloured by iron oxideand parallel bands of white or black onyx. Forming within the trigonal crystal system, it typically precipitates from silica rich waters in the cavities of volcanic or sedimentary rocks.