Onyx is a typically black-and-white banded variety of agate, a silicate mineral. The bands can also be monochromatic with alternating light and dark bands. Sardonyx is a variety with red to …

Mar 5, 2025 · Curious about onyx? Here's your chance to get to know the different types of onyx and see for yourself just how beautiful and distinct each of them are.

Onyx, striped, semiprecious variety of the silica mineral agate with white and black alternating bands. Onyx is used in carved cameos and intaglios because its layers can be cut to show a …

Jun 18, 2025 · What Is Onyx? Onyx is a type of chalcedony, which is a form of quartz. It’s known for its smooth, waxy luster and striking parallel bands, though the most popular variety is solid …

May 2, 2023 · Onyx is a banded chalcedony known for its dark layers and durability. Learn its formation, types, how to spot real vs dyed stones, and its modern uses.

Apr 16, 2025 · Onyx is a type of chalcedony, which is itself a form of microcrystalline quartz. Onyx stones have straight, nearly parallel bands or layers of color, which allow skilled gem carvers …

Onyx is a banded variety of chalcedony, which itself is a microcrystalline form of quartz (SiO₂). What distinguishes onyx is its parallel bands of contrasting colors, most commonly black and …

Jun 15, 2021 · Onyx is known as the “Stone for the Mind” because of the mental aspect of its spiritual properties. Onyx symbolizes mental strength, mindfulness, and self-control.

Onyx is an ancient gemstone, having been used in jewelry and as an ornamental gemstone for carvings since antiquity. Onyx has traditionally been one of the most important engraving and …

Mar 25, 2025 · The meaning, hardness, luster, origin, and crystal system of onyx. Learn how this gemstone supports strength, stability, and emotional clarity.