Seraphinite

Hardness: 3-4 (Mohs Scale, due to its micaceous nature, individual flakes are soft but the aggregate is more durable). Color: Typically dark green to olive green, can also be greenish-black, brown, or gray. Luster: Silky to pearly, often chatoyant. Crystal Structure: Monoclinic, but crystals are rarely observed as distinct individuals; usually found in massive or flaky aggregates. Cleavage: Perfect basal cleavage, leading to its flaky appearance. Specific Gravity: 2.5-2.7.

Seraphinite is a variety of Clinochlore, which is a member of the chlorite group of minerals. It forms as a result of regional metamorphism in low-to-medium grade metamorphic rocks, often associated with serpentine rocks or as a retrogressive alteration product of other magnesium-rich silicates. Its distinctive feathery patterns are due to the inclusion of organized bundles of chatoyant silver-white to golden fibers of mica-like minerals, primarily clinochlore itself, that are aligned in a specific direction. The primary known deposit is in the Korshunovskoye iron mine in eastern Siberia, Russia, where it occurs within contact metamorphic zones.

Primarily used as a lapidary material for cabochons, beads (as seen in the image), pendants, and other ornamental carvings and sculptures due to its unique chatoyancy and attractive green color. It is a popular gemstone in jewelry and is also collected by mineral enthusiasts. It is not used in industrial applications due to its relative softness and scarcity.

The name 'Seraphinite' is a trade name and comes from 'Seraphim', the highest rank of angels, due to the feathery, wing-like patterns created by its chatoyancy. It is a highly sought-after gemstone for its unique appearance and is often used in spiritual practices for its purported healing properties and connection to the angelic realm. It is also known as 'Clinochlore' in its scientific context.

In the field, Seraphinite is identifiable by its distinctive dark green color with the characteristic feathery, chatoyant patterns that appear to move when viewed from different angles (known as schiller or chatoyancy). This optical effect is crucial for identification. Its softness (can be scratched by a knife) and flaky nature can also be indicative. The primary source is in the Korshunovskoye iron mine, located in the Irkutsk region of Eastern Siberia, Russia. While not found in many widespread locations, its unique appearance makes it readily recognizable to collectors and gemologists.