Opals
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40 CTS OPAL FOSSIL PINEAPPLE- GLAUBERITE /// FO-694-FOSSIL OPALS
- SKU
- FO-694
- Dimensiones (mm)
- 35.000 x 29.000 x 16.000mm
- Peso (cts)
- 40.000
- Shape
- Freeform
- Tipo
- Specimen
- Colores
-
OPALISED FOSSIL PINEAPPLE
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.
- SKU
- FO-694
- Dimensiones (mm)
- 35.000 x 29.000 x 16.000 mm
- Peso (cts)
- 40.000
- Shape
- Freeform
- Tipo
- Specimen
- Colores
-
OPALISED FOSSIL PINEAPPLE
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.
| Proveedor de envío | Envío a United States of America | Envíos al resto del mundo |
|---|---|---|
| Standard Shipping - Tracked | $20.00 / 7 días días | $25.00 / 14 días días |
|
United States of America
Standard Shipping - Tracked tiene descuento a $20.00 en pedidos con 2 o más artículos
Resto del mundo
Standard Shipping - Tracked tiene descuento a $25.00 en pedidos con 2 o más artículos
|
||
| FedEx | $35.00 / 2 días días | $39.00 / 7 días días |
|
United States of America
FedEx tiene descuento a $35.00 en pedidos con 2 o más artículos
Resto del mundo
FedEx tiene descuento a $39.00 en pedidos con 2 o más artículos
|
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| DHL | $25.00 / 10 días días | $29.00 / 21 días días |
|
United States of America
DHL tiene descuento a $20.00 en pedidos con 2 o más artículos
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PositivoLovely. Thank you.
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Positivo
Lovely. Thank you.
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Positivo
Nice Piece. Thank you.
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Positivo
Great price for an Opalized Fossil. Feel like salt and pepper squid tonight Thank you.
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Positivo
Accurate description and footage. Thank you.
