Green opal stone pebble
Weight 145 gr
| CHARACTERISTICS | |
| Weight | 145 gr |
| Size | 60x60x35 mm |
| Reference | 231011422 |
| Mineral | mineral Green opal |
| Category | Objects and fossils |
| Group | Pebbles |
| Country |
 Madagascar
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| Formula SiO2·nH2O] GREEN OPAL | |||
| O | Oxygen | Other no metal | 53.26% |
| Si | Silicon | Metalloids | 46.74% |
| 100% | |||
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Opal is a non-crystalline mineral from the silicate family. It consists mainly of hydrated silicon dioxide, its water content can vary from 3 to 21%. Opal is distinguished by its amorphous structure and its spectacular play of colors, the result of the diffraction of light by the microscopic silica spheres that compose it. It generally forms in cracks and cavities in rocks, mainly sedimentary rocks and volcanic rocks. Opals are classified into several types, the best known of which are precious opal, which has a play of colors, and common opal, which does not. It is mainly mined in Australia, which produces around 95% of the world's opal. Opal is often used in jewelry and is the birthstone for the month of October.
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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.
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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Paypal
Visa
Mastercard
Amex
Chèque
Virement
