Orthoclase is often associated with mental clarity

and quartz

Its dimensions are 31x28x14 mm and it weighs 20

Jasper and Onyx

It is amazingly light considering its mass of  113x78x8 mm

Narsarsukite Crystal | 92.92 gram Mineral | Rare Specimen | Mont-Saint-Hilaire, Québec, Canada Diogenite Orthoclase is often associated withA fine cluster of crystal of Narsarsukite from the famous Mont Saint Hilaire, Qubec, Canada. Narsarsukite is a rare sodium, titanium, iron silicate. Its color varies from pale to dark yellow, greenish yellow, dark green, grayish brown to dark brown, colorless, pale pink, lemon yellow to orange yellow, often with a glassy or dull or greasy luster. The crystals are usually well formed, sharp, tabular or lath shaped crystals forming attractive radiating