Sardonyx Egg - 2in. - Intuitively selected Iron Phosphate 17kg block that maintains excellent

17kg block that maintains excellent structural integrity is rare

minor surface texture and healed seams consistent with calcite

soft banded color zoning

Blue Point is appreciated for qualities associated with calm communication

Sardonyx Egg - 2in. - Intuitively selected Iron Phosphate 17kg block that maintains excellentGeological 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.