Carnelian is a vibrant and translucent variety of chalcedony, which is a type of microcrystalline quartz. Known for its warm reddish-orange to reddish-brown hues, carnelian has been used for centuries in jewelry, amulets, and ornamental items. Here’s more about carnelian:
- Color: Carnelian’s most recognizable feature is its range of warm colors, including shades of reddish-orange, orange, and brown. The intensity of the color can vary, and some carnelian specimens might have banding or color zoning.
- Composition: Carnelian is primarily composed of silicon dioxide, like all quartz varieties. The color is due to iron impurities within the crystal structure.
Translucency: Carnelian is typically translucent, allowing light to pass through to varying degrees. This translucency contributes to its attractive appearance, especially when the stone is cut and polished.
Green aventurine is a variety of quartz that is known for its green color and shimmering appearance. It belongs to the larger group of minerals known as chalcedony, which is a type of microcrystalline quartz. Aventurine is typically green due to the presence of microscopic inclusions of green minerals such as fuchsite, mica, or chlorite.
Key characteristics of green aventurine include:
- Color: As the name suggests, green aventurine is primarily green in color. The shade of green can vary from pale to dark, often with a sparkling or shimmering effect caused by the inclusions.