43^€

Free form polished rock crystal

Weight 710 gr

CHARACTERISTICS
Weight	710 gr
Size	110x80x45 mm
Reference	221108777
Mineral	mineral Quartz
Category	Decoration stones
Group	Free forms
Country	Madagascar

Contractual photos showing the object you will receive when ordering. the photos were taken in order to obtain the most faithful possible rendering of the object.
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Formula SiO₂] QUARTZ
O	Oxygen	Other no metal	53.26%
Si	Silicon	Metalloids	46.74%
			100%
Quartz is a mineral composed of silicon and oxygen. It belongs to the silicate group and comes in a wide variety of crystalline forms and colors: amethyst, citrine, smoky quartz, faden quartz... Thanks to its hardness, resistance to weathering and great abundance, quartz is one of the most common minerals on Earth. Quartz has remarkable physical and chemical properties. It is very hard, chemically inert and has excellent thermal conductivity. Its crystalline structure, characterized by a regular organization of silicon and oxygen atoms, gives it piezoelectric and pyroelectric properties, i.e. the ability to generate an electrical charge in response to mechanical stress or a change in temperature. Due to its hardness and abundance, it is widely used in the construction industry as a component of concrete, mortar, and glass. The piezoelectric properties of quartz make it a material of choice for making oscillators, filters, and sensors used in clocks, computers, and electronic equipment.

Return and delivery

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.

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

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