55^€

Polished Lazurite from Madagascar

Weight 960 gr

CHARACTERISTICS
Weight	960 gr
Size	125x75x70 mm
Reference	211106640
Mineral	mineral Lazurite
Category	Decoration stones
Group	Free forms
Country	Madagascar

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Formula (Na,Ca)₈[Al₆Si₆O₂₄](SO₄,S,Cl)₂] LAZURITE
O	Oxygen	Other no metal	38.53%
Si	Silicon	Metalloids	16.91%
Al	Aluminum	Poor metal	16.23%
Na	Sodium	Alkali metal	13.84%
Ca	Calcium	Alkaline earth metal	8.03%
Cl	Chlorine	Non-metal halogen
S	Sulfur	Other no metal
			93.56%
Lazurite is a mineral from the silicate family, more precisely a sodium and sulfur aluminosilicate with sulfate groups. It generally occurs as blue granules in limestone, and is the main constituent of the semi-precious stone lapis lazuli. It crystallizes in the isometric system, but well-formed crystals are rare. Most often, it appears in the form of granular masses with a glassy sheen. Its hardness on the Mohs scale varies between 5 and 5.5, which makes it quite resistant. Its density is approximately 2.4 to 2.5 g/cm³. The intense blue of lazurite is due to the presence of S3- ions in the crystal structure. This mineral is mainly used as a pigment for paint and ceramics.

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Once the package is supported by the postal service, delivery times are those announced by the Post (letter followed or Colissimo followed). Parcel shipping from France.

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