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6462
22

AMAZONITE CLUSTER-USA 52.90 CTS [MX8623]

SKU
寸法(mm)
x x mm
重さ (CT)
Certified Gemstones
いいえ
タイプ
Specimen

MINERAL GEM WORLD

AMAZONITE

This is a natural specimen from  Colorado usa.It is a well formed  cluster ideal  for any collection.

Weight 52.90 cts

Size 29 x 23 x 17 mm app

Amazonite (sometimes called "Amazon stone") is a green variety of microcline feldspar.

The name is taken from that of the Amazon River, from which certain green stones were formerly obtained, but it is doubtful whether green feldspar occurs in the Amazon area.

Amazonite is a mineral of limited occurrence. Formerly it was obtained almost exclusively from the area of Miass in the Ilmen mountains, 50 miles southwest of Chelyabinsk, Russia, where it occurs in granitic rocks. More recently, high-quality crystals have been obtained from Pike's Peak, Colorado, where it is found associated with smoky quartz, orthoclase, and albite in a coarse granite or pegmatite. Crystal Park, El Paso County, Colorado is a well-known locality for crystals of amazonite. Some other localities in the United States yield amazonite, and it is also found in pegmatite in Madagascar and in Brazil.

Because of its bright green colour when polished, amazonite is sometimes cut and used as a gemstone, although it is easily fractured.

For many years, the source of amazonite's color was a mystery. Naturally, many people assumed the color was due to copper because copper compounds often have blue and green colors. More recent studies suggest that the blue-green color results from small quantities of lead and water in the feldspar. (Hoffmeister and Rossman, 1985)

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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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  • gemarab
    gemarab
    ポジティブ

    Great and clear sapphire, beautiful cut ! Great packaging

  • js20031
    js20031
    ポジティブ

    AAAA+++ Very Happy! Just like the pic.

  • js20031
    js20031
    ポジティブ

    AAAA+++ Very Happy! Just like the pic.

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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 : 217270
始まります : 7th November 2024 07:00 pm PST
* すべての価格は:通貨で表示されます