Opals
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55 CTS OPAL PINEAPPLE GLAUBERITE -IKALITE /// FO-691 Fossil opals
- SKU
- FO-691
- 寸法(mm)
- 42.000 x 35.000 x 24.000mm
- 重さ (CT)
- 55.000
- Shape
- Freeform
- タイプ
- Specimen
- 色
-
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.
- SKU
- FO-691
- 寸法(mm)
- 42.000 x 35.000 x 24.000 mm
- 重さ (CT)
- 55.000
- Shape
- Freeform
- タイプ
- Specimen
- 色
-
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.
| 配送業者 | 発送先:国 | その他の国への配送 |
|---|---|---|
| Standard Shipping - Tracked | $20.00 / :日日 | $25.00 / :日日 |
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：国
:数量以上のアイテムを含む注文では、:プロバイダーは $20.00 に割引されます
世界のその他の地域
:数量以上のアイテムを含む注文では、:プロバイダーは $25.00 に割引されます
|
||
| FedEx | $35.00 / :日日 | $39.00 / :日日 |
|
：国
:数量以上のアイテムを含む注文では、:プロバイダーは $35.00 に割引されます
世界のその他の地域
:数量以上のアイテムを含む注文では、:プロバイダーは $39.00 に割引されます
|
||
| DHL | $25.00 / :日日 | $29.00 / :日日 |
|
：国
:数量以上のアイテムを含む注文では、:プロバイダーは $20.00 に割引されます
|
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ポジティブAs beautiful as it looks. A river of opal flowing between fossilized wood! Absolutely wonderful and it arrived quickly!
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ポジティブ
Paid and shipped - no feedback left after 100 days
