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6

1300 CTS MOOKAITE [PINK OPAL] AUSTRALIA OA/GA1 ]

SKU
寸法(mm)
110.000 x 90.000 x 45.000mm
重さ (CT)
1300.000
タイプ
Carved

PINK OPAL -AUSTRALIA

This is a natural untreated pink opal stone well carved and polished. It has interesting white potch lines in it and it has been hand carved from one piece of rough.

This is what the West Australian mine dept says about Pink Opal

.

Pink opal ‘Pink opal’ is a prospectors’ name applied to a different variety of mookaite that outcrops as a persistent bed of extremely bright pink opalized radiolarite near Binthalya. At this site, pink opal is present as a dominant, horizontal bed within zones of coloured porcellanites located beneath a surface-brecciated zone in which angular fragments of pink porcellanite have been cemented by iron and silica solutions to produce an attractive pink breccia. The pink zone beneath has already been tested by trial mining to ascertain the extent and consistency of the pink, opalized material.

Examination of pink opal thin sections has confirmed the rock is radiolarite with a dominantly isotropic, finegrained mineral composition. Although not verified by XRD analysis, the pink opal’s physical and visible optical properties suggest it is predominantly opaline silica, having a lower bulk density than the locally porcellanized mookaite material. Pink opal commonly shows liesegang banding and often contains small vugs and fine fractures infilled with microcrystalline quartz. Microscopic, lustrous grains within the rock result from reflections of granular quartz where it has infilled pores and replaced radiolarian structures. In a manner similar to the origin of mookaite, the resilicification of the Windalia Radiolarite forming the pink opal porcellanite has resulted in a visually attractive, bright pink material displaying a high vitreous lustre. Pink opal is extremely hard and brittle with a conchoidal fracture . These properties allow pink opal to take a high polish, making it suitable for the production of colourful, polished tumbled stones, cabochons, and other artworks .

All weights and sizes below are approximate

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:数量以上のアイテムを含む注文では、:プロバイダーは $9.00 に割引されます
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:数量以上のアイテムを含む注文では、:プロバイダーは $16.00 に割引されます

sedagems
sedagems
Hi Welcome to the Sedagems store, Run by Paul Sedawie and specializing in Australian sapphires and gems stones he has collected on his many buying trips world wide. All stock has a money back guarantee as your continued business is our business.
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  • royrock
    royrock
    ポジティブ

    Beautiful agate piece , and as always fast efficient service from Sedagems

  • maiziemaizie
    maiziemaizie
    ポジティブ

    Gorgeous stones, very happy

  • maiziemaizie
    maiziemaizie
    ポジティブ

    Gorgeous stone, very happy

監査

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発送詳細

配送:
$16.00 Registered Shipping 経由の日数をカウント
発送元:
Australia

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この出品者は、Australia での取引に 10.00% 税金を追加します。

概要

リストタイプ : Standard
製品番号 : 1048124
始まります : 8th November 2024 06:06 pm PST
* すべての価格は:通貨で表示されます