Dendrite opal
Weight 195 gr
| CHARACTERISTICS | |
| Weight | 195 gr |
| Size | 80x45x45 mm |
| Reference | 200502737 |
| Mineral | mineral Green opal |
| Category | Rocks and minerals |
| Group | Raw rocks |
| Country |
 Brazil
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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·nH2O] GREEN OPAL | |||
| O | Oxygen | Other no metal | 53.26% |
| Si | Silicon | Metalloids | 46.74% |
| 100% | |||
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Opal is a mineraloid, meaning it does not have a perfectly ordered crystal structure like most minerals. It is primarily composed of hydrated silica, which is silicon dioxide combined with water.
Depending on the size and arrangement of these spheres, opal can exhibit a wide range of colors, from milky white to deep black and all shades of the rainbow. It is this characteristic that makes opal a highly prized gemstone in jewelry.
Opal formation is related to complex geological processes. It is usually formed in sedimentary environments, by precipitation of silica from aqueous solutions. The main opal deposits are found in Australia, Mexico, Brazil and the United States. Opals are often associated with silica-rich volcanic or sedimentary rocks. The quality and value of an opal depends on several factors, such as clarity, colour, play of light and size.
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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.
Payment methods
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Amex
Chèque
Virement
Paypal
Visa
Mastercard
Amex
Chèque
Virement
