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

          130 CTS ASTROPHYLITE ROUGH SLAB

          4506
          5

          UGS
          [F3900 ]
          Dimensions (mm)
          50.000 x 38.000 x 7.000mm
          Poids (cts)
          130.000
          Couleurs

          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.

          Fournisseur d'expédition Expédition vers Australia Expédition dans le reste du monde
          FedEx $12.00 / 3 $39.00 / 10
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          Registered Shipping $9.00 / 7 $16.00 / 21
          Australia
          Registered Shipping bénéficie d'une remise de $9.00 sur les commandes contenant 2 ou plus d'articles
          Reste du monde
          Registered Shipping bénéficie d'une remise de $16.00 sur les commandes contenant 2 ou plus d'articles

          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
          Vérifié
          19152

          • dmcjr1875
            dmcjr1875
            Positif

            I'm expecting an experience of good reasoning.

          • ksrocks
            ksrocks
            Positif

            Thank you lovely specimen

          • laurahawkmoth
            laurahawkmoth
            Positif

            wow -- amazing texture & translucence!

          • mattosh82
            mattosh82
            Positif

            Received!!!! So awesome! Thank you so much! Will definitely be visiting your store again soon.

          5%
          Code promo SEDADEALS
          Valable jusque
          4th Mar 2025

          Audit

          Le programme Gemstone Sheriff permet à nos membres de demander un audit sur tout produit, qui est complété par un Gemologist indépendant qui évalue l'exactitude de la description de l'article et des photos.

          Les détails d'expédition

          Expédition:
          $16.00 21 les jours via Registered Shipping
          Expédié depuis:
          Australia

          Options de paiement

          • paypal
          • stripe
          Ce vendeur ajoute 10.00% aux transactions en Australia .

          Aperçu

          Type d'inscription : Standard
          Identifiant du produit : 487875
          Départs : 29th January 2025 10:40 pm PST
          * Tous les prix sont en USD

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