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          339910_1360985877.jpg
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          $52.00 USD
          価格

          120 CTS ASTROPHYLITE ROUGH SLAB

          4111
          3

          SKU
          [F3907 ]
          寸法(mm)
          58.000 x 37.000 x 6.000mm
          重さ (CT)
          120.000

          QUALITY ROUGH

          ASTROPHYLITE ROUGH

          This is a natural untreated slab ready for polishing.Due to the different hardness of the two materials we recommend treating the stone with opticon or resin to get a good polish.Mined in the Kola

          The needles are a interesting copper bronze colour which is hard to see in the pictures.This will be a interesting stone to polish and a challenge.!

          Note we have taken the photo with the stone wet to give you a idea how it will look polished. We have also taken a photo of both sides of the slab.

          Astrophyllite is a very rare, brown to golden-yellow hydrous potassium iron titanium silicate mineral. Belonging to the astrophyllite group, astrophyllite may be classed either as an inosilicate, phyllosilicate, or an intermediate between the two. It forms an isomorphous series with kupletskite, to which it is visually identical and often intimately associated. Astrophyllite is of interest primarily to scientists and collectors.

          Heavy, soft and fragile, astrophyllite typically forms as bladed, radiating stellate aggregates. It is this crystal habit that gives astrophyllite its name, from the Greek words astron meaning “star” and phyllon meaning “leaf”. Its great submetallic gleam and darkness contrast sharply with the light (felsic) matrix the mineral is regularly found within. Astrophyllite is usually opaque to translucent, but may be transparent in thin specimens.

          As the crystals themselves possess perfect cleavage, they are typically left in stead, the entire aggregate often cut into slabs and polished. Owing to its limited availability and high cost, astrophyllite is seldom seen in an ornamental capacity. It is sometimes used in jewellery where it is fashioned into cabochons.

          Found in cavities and fissures in unusual felsic igneous rocks, astrophyllite is associated with feldspar, mica, titanite, zircon, nepheline, and aegirine. Common impurities include magnesium, aluminium, calcium, zirconium, niobium, and tantalum. It was first discovered in 1854 at its type locality; Laven Island, Norway. Interestingly, kupletskite was not known until 1956, over a hundred years later.

          配送業者 配送先Australia その他の国への配送
          FedEx $12.00 / 3 $39.00 / 10
          :国
          FedEx 、 2以上のアイテムを含む注文で$12.00に割引されます
          世界のその他の地域
          FedEx 、 2以上のアイテムを含む注文で$39.00に割引されます
          Registered Shipping $9.00 / 7 $16.00 / 21
          :国
          Registered Shipping 、 2以上のアイテムを含む注文で$9.00に割引されます
          世界のその他の地域
          Registered Shipping 、 2以上のアイテムを含む注文で$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.
          Mermaid Waters 、 Australia
          確認済み
          19220フィードバック

          • rickferreira626
            rickferreira626
            ポジティブ

            A gorgeous pair blue topaz stones. This is one happy customer.

          • opalgoat
            opalgoat
            ポジティブ

            Well packaged, beautiful gems

          • opalgoat
            opalgoat
            ポジティブ

            Well packaged, beautiful gems

          • opalgoat
            opalgoat
            ポジティブ

            Well packaged, beautiful gems

          • opalgoat
            opalgoat
            ポジティブ

            Well packaged, beautiful gems

          5%
          クーポンコード SEDADEALS
          まで有効
          4th Mar 2025

          監査

          Gemstone Sheriffプログラムでは、メンバーがあらゆる製品の監査をリクエストできます。監査は独立したGemologistによって完了され、アイテムの説明と写真の正確さが評価されます。

          発送詳細

          配送:
          $16.00 21日 ( Registered Shipping経由)
          発送元:
          Australia

          支払いオプション

          • paypal
          • stripe
          この販売者は、 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 : 487882
          始まります : 13th February 2025 10:50 pm PST
          * すべての価格はUSDで表記されています

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