Onyx is a classic and powerful variety of chalcedony, known for its smooth texture and striking parallel banding. Typically found in black and white layers, onyx has been prized since ancient times for use in jewelry, carvings, and amulets. It is a variety of microcrystalline quartz, composed primarily of silicon dioxide.
Origins and Composition
Origin: Brazil
Chemical Formula: SiO₂ (Silicon Dioxide)
Color: Usually black with white bands, but also found in brown, red, green, and other hues
Hardness: 6.5–7 on the Mohs scale
Crystal System: Trigonal
Natural Product Notice: These items are unique and may feature natural imperfections resulting from extraction and polishing.
