Cyanotrichite Crystal, Sky-Blue Tufts on Matrix – 12 × 4.5 × 3 cm

Stone: Cyanotrichite Crystal on Matrix
Weight: 270 g
Size: 12 × 4.5 × 3 cm
Treatment: None
Origin: Qinglong Mine, China

Rare natural Cyanotrichite crystal featuring delicate sky-blue, acicular crystal sprays forming dense, tufted aggregates that richly cover the matrix. Cyanotrichite is a secondary copper aluminum sulfate hydroxide mineral typically formed in the oxidized zones of copper deposits. It is characterized by its fibrous to needle-like crystal habit and its vivid blue coloration.