Réf : BA449

Cordierite polished pebble - India - polished minerals 6 cm / 63g / BA449

: Reduced price
26,80 €: Comparative price

26,80 €: Normal price

Cordierite belongs to the group of tectosilicates. It contains aluminum and magnesium but also traces of iron, manganese, titanium, calcium, sodium and potassium. Its chemical formula is (Mg,Fe) ₂ Al ₄ Si ₅ O ₁₈ .

Cordierite owes its name to Louis Cordier, a French mineralogist who first described it in 1809 under the term dichroite.

The color of cordierite varies from blue to purple, hence its other name: Iolite, from the Greek iol meaning purple. It can also be brownish.

Cordierite or Iolite has a very strong pleochroism and the lapidaries, by cutting this fine stone, bring out its beautiful color.

Iolite is said to have been used by the Vikings to navigate when the sky was overcast and to locate the position of the sun.

Unique piece - Contractual photos

Origin: polished minerals from India

Dimensions: 6 x 3.9 x 1.8 cm

Weight: 63 g