THE PREMIER MARKETPLACE FOR REAL GEMS
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          339888_1360984996.jpg
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          $52.00 USD
          价格

          130 CTS ASTROPHYLITE ROUGH SLAB

          4534
          5

          存货单位
          [F3900 ]
          尺寸(毫米)
          50.000 x 38.000 x 7.000mm
          重量 (cts)
          130.000
          颜色

          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.

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          FedEx折扣至$12.00 ,适用于包含2或更多商品的订单
          世界其他地区
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          Registered Shipping $9.00 / :几天天 $16.00 / :几天天
          :国家
          Registered Shipping折扣至$9.00 ,适用于包含2或更多商品的订单
          世界其他地区
          Registered Shipping折扣至$16.00 ,适用于包含2或更多商品的订单

          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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          • mattosh82
            mattosh82
            积极的

            Super excited. Thank yiu

          • mattosh82
            mattosh82
            积极的

            Thank you again for the refund. Thank you! thank you! thank you! Love your store! Will definitely be back again

          • dmcjr1875
            dmcjr1875
            积极的

            I'm expecting an experience of good reasoning.

          • ksrocks
            ksrocks
            积极的

            Thank you lovely specimen

          5%
          优惠券代码 SEDADEALS
          有效期至
          4th Mar 2025

          审计

          Gemstone Sheriff计划允许我们的会员对任何产品申请审核,审核由独立的Gemologist人员完成,负责评估产品描述和图片的准确性。

          送货细节

          船运:
          $16.00 21通过Registered Shipping计数天数
          发货自:
          Australia

          付款方式

          • paypal
          • stripe
          该卖家在Australia交易中添加了10.00%税。

          概述

          列表类型 : Standard
          产品编号 : 487875
          开始 : 29th January 2025 10:40 pm PST
          * 所有价格均以:货币为单位

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