95^€

Lapis lazuli block

Weight 600 gr

CHARACTERISTICS
Weight	600 gr
Size	130x95x50 mm
Reference	231212252
Mineral	rock Lapis-lazuli
Category	Decoration stones
Group	Free forms
Country	Afghanistan

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Formula (Na,Ca)₈(AlSiO₄)₆(SO₄,S,Cl,OH)₂] LAPIS-LAZULI
O	Oxygen	Other no metal	45%
Si	Silicon	Metalloids	10%
C	Carbon	Other no metal	10%
Na	Sodium	Alkali metal	4%
Ca	Calcium	Alkaline earth metal	4%
Al	Aluminum	Poor metal	4%
S	Sulfur	Other no metal	2%
Fe	Iron	Transition metal	2%
			81%
Lapis lazuli is a metamorphic rock. Its characteristic blue color, often dotted with golden veins of pyrite, has made it a highly prized stone since ancient times. The intense blue color of lapis lazuli is mainly due to the presence of lazurite, a mineral from the feldspathoid group. This rock also contains other minerals such as calcite and pyrite. The formation of lapis lazuli is related to contact metamorphic processes. It usually forms in crystalline marbles, when limestone rocks are subjected to high temperatures and pressures in the presence of sodium-rich fluids. These conditions favor the formation of lazurite and other minerals constituting lapis lazuli. From a mineralogical point of view, lapis lazuli has a variable composition. The proportion of lazurite, calcite and pyrite can fluctuate from one sample to another, which explains the diversity of colors and patterns observed in this stone. Its physical and chemical properties, combined with its natural beauty, make it a precious stone used for centuries in jewelry and as a pigment for the arts.

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Shipping time
Your orders are usually shipped the day of the order and at the latest after 2 working days.

Delivery delay
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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Our refund and return policy lasts 14 days. You can read the details on the "return and delivery" page.

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