mineral

Pink Thulite (Zoisite)

Ca2Al3(SiO4)3(OH) - Manganese-bearing Zoisite

AI-generated identification · may be incorrect

Hardness: 6-6.5 (Mohs), Color: Pink to reddish-pink with white streaks, Luster: Vitreous to pearly, Crystal Structure: Orthorhombic, Cleavage: Perfect, Specific Gravity: 3.2-3.4

Hardness: 6-6

Identified May 6, 2026More mineral →

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Physical properties

Hardness: 6-6.5 (Mohs), Color: Pink to reddish-pink with white streaks, Luster: Vitreous to pearly, Crystal Structure: Orthorhombic, Cleavage: Perfect, Specific Gravity: 3.2-3.4

Formation & geological history

Formed through the regional metamorphism of calcium-rich rocks. Pink color is derived from manganese substituting for calcium in the zoisite lattice.

Uses & applications

Primarily used as a decorative stone, for cabochons in jewelry, and as a popular specimen for mineral collectors.

Geological facts

Thulite is the national stone of Norway and was first discovered in Sauland, Norway, in 1820. It is named after the mythical island of Thule.

Field identification & locations

Identify by its distinct pink color, lack of transparency compared to rose quartz, and high hardness (it will not be scratched by a steel copper penny). Commonly found in Norway, Namibia, and some parts of the USA like North Carolina.