Chalcedony's standard chemical structure (based on the chemical structure of quartz) is SiO 2 (silicon dioxide).
ໂຄງປະກອບການເຄມີມາດຕະຖານຂອງ Chalcedony (ອີງໃສ່ໂຄງປະກອບທາງເຄມີຂອງໄຕມາດ) ແມ່ນ SiO2 (silicon dioxide).