Seraphinite

Seraphinite is a trade name for a chatoyant variety of clinochlore - a magnesium aluminum silicate in the chlorite group. It forms in metamorphic rocks through the alteration of iron and magnesium-bearing minerals under moderate pressure and temperature.

The distinctive silvery, feather-like patterns that give seraphinite its name (after the seraphim, the six-winged angels of Hebrew tradition) are caused by mica-like inclusions oriented in fan-shaped or radiating patterns within the dark green clinochlore host. When polished, these inclusions catch light and create shimmering silvery streaks that genuinely resemble feathered wings.

Gem-quality seraphinite comes exclusively from the Lake Baikal region of Eastern Siberia. Like charoite (another uniquely Russian mineral), its remote origin, limited supply, and distinctive appearance have made it a sought-after collector's stone.

Seraphinite is identified by its unique feathery, silvery shimmer pattern on a dark green background - no other mineral produces this specific visual effect. At hardness 2-4 (variable, typically around 2.5), it's quite soft and scratches easily.

Distinguish from serpentine (lacks the feathery shimmer), malachite (banded rather than feathered, copper-green), and aventurine (sparkly but not feathered). The radiating, fan-shaped silver patterns on dark green are diagnostic and essentially impossible to replicate artificially.