THE PREMIER MARKETPLACE FOR REAL OPALS
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      $1,100.00 USD
      Prezzo consigliato al pubblico $3,300.00

      55 CTS OPAL PINEAPPLE GLAUBERITE -IKALITE /// FO-691 Fossil opals

      883
      1

      SKU
      FO-691
      Dimensioni (mm)
      42.000 x 35.000 x 24.000mm
      Peso (cts)
      55.000
      Shape
      Freeform
      Tipo
      Specimen
      Colori

      OPALISED PINEAPPLE

      GREEN BLUE MAUVE

      One of the rarest and most fascinating types of opal comes in the shape of a palm-sized cluster of radiating points that resembles a pineapple. These "Opal Pineapples" are found only in the Cretaceous sediments of the White Cliffs in Australia

      White Cliffs is the only place where these marvelous (and very rare) pseudomorphic “pineapple” opals have been found. They were formed when a mineral crystal of glauberite (or ikalite) was first replaced by calcite and then opalised.

      Formula: SiO2•nH2O
      Colour: Colorless, white, various
      Hardness: 51⁄2 - 61⁄2

      A pseudomorph (which means false shape in Latin) is a mineral that has replaced another mineral's chemistry or structure with its own without changing the outward shape of the original mineral while color, hardness, and other properties change to those of the replacing mineral. Transformations from one mineral to another are not unusual in nature, but preserving the outward shape of the original mineral is! The end result is that the crystal appears to be one mineral but is actually another.

      Opal "Pineapples" - an opal pseudomorph formed by the replacement of glauberite by opal - found only in New South Wales.


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      fossil opals
      fossil opals
      sally Patel and natassa Patel have been in business for 35 years trueblueopal us family owned company Lightningopals llc is USA based sister branch of trueblueopals, we wholesale top opals from all opal fields , working with mining partner's like David Darby of yowah we specialize in investmentopals , and work with auction houses as well , sally has held several positions in opal association and is current treasurer we are members of ica and Agta and American opal society and Lrma other family members are also selling on opalauctions with over 20 stores catering from rough cut fossil beads specimens carvings and more
      Mermaid Beach , United States of America
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      30th Jan 2025

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      Il programma Opal Sheriff consente ai nostri membri di richiedere un controllo su qualsiasi prodotto, che viene completato da un Gemologist indipendente che valuta l'accuratezza della descrizione e delle immagini dell'articolo.

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      Inizia : 3rd January 2025 02:39 pm PST
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