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      You have not bid on this auction.

      $11.00
      Current Bid
      7
      Bids
      Closed
      21/11/2024 04:56 am

      1.70 Carats Green Color Tourmaline Gemstone

      7
      135
      2

      SKU
      Dimensions (mm)
      6.650 x 6.250 x 5.270mm
      Weight (cts)
      1.700
      Type
      Faceted
      Colours

      CategoryCyclosilicateFormula
      (repeating unit)(Ca,K,Na, )(Al,Fe,Li,Mg,Mn)3(Al,Cr,Fe,V)6
      (BO3)3(Si,Al,B)6O18(OH,F)4[1][2]IMA symbolTur[3]Crystal systemTrigonalCrystal classDitrigonal pyramidal (3m)
      H-M symbol: (3m)Space groupR3m (no. 160)IdentificationColorMost commonly black, but can range from colorless to brown, red, orange, yellow, green, blue, violet, pink, or hues in-between. It can also be bi-colored, or even tri-colored. Rarely, it can be found as neon green or electric blue.Crystal habitParallel and elongated; acicular prisms, sometimes radiating; massive; scattered grains (in granite)CleavageIndistinctFractureUneven, small conchoidalTenacityBrittleMohs scale hardness7.0–7.5LusterVitreous, sometimes resinousStreakWhiteDiaphaneityTranslucent to opaqueSpecific gravity3.06+0.20–0.06[1]Density2.82–3.32Polish lusterVitreous[1]Optical propertiesDouble-refractive, uniaxial negative[1]Refractive indexnω = 1.635–1.675
      nε = 1.610–1.650Birefringence−0.018 to −0.040; typically about −0.020 but in dark stones it may reach −0.040[1]Pleochroism

      • Typically moderate to strong[1]

      • Red: definite; dark red, light red

      • Green: strong; dark green, yellow-green

      • Brown: definite; dark brown, light brown

      • Blue: strong; dark blue, light blue

      Dispersion0.017[1]UltravioletfluorescencePink stones; inert to very weak red to violet in long and short wave[1]Absorption spectraStrong narrow band at 498 nm, and almost complete absorption of red down to 640 nm in blue and green stones; red and pink stones show lines at 458 and 451 nm, as well as a broad band in the green spectrum[1]

      Shipping provider Shipping to Thailand Shipping to rest of world
      Standard Shipping - Tracked $18.00 / 15 days $18.00 / 23 days
      Thailand
      Standard Shipping - Tracked is discounted to $22.00 on orders with 2 or more items
      Rest of the world
      Standard Shipping - Tracked is discounted to $22.00 on orders with 2 or more items
      DHL $28.00 / 8 days $28.00 / 8 days
      Thailand
      DHL is discounted to $38.00 on orders with 2 or more items
      Rest of the world
      DHL is discounted to $38.00 on orders with 2 or more items

      gemstoneshunter
      gemstoneshunter
      Bangrak, Thailand
      Verified
      5839 Feedback

      • 89irocz28
        89irocz28
        Positive

        Item as described. AIG certified. Tested good in USA. Fast shipping. Good communication. Will buy from seller again. Thank You, R.C. Page

      • heykittykitty
        heykittykitty
        Positive

        Lovely shade of green, beautiful stone. Quickly shipped.

      Bids History (7)
      jrwjewel
      3 months ago
      $10.00
      lordloku
      3 months ago
      $9.00
      lordloku
      3 months ago
      $8.00
      petrmich
      3 months ago
      $7.00
      lordloku
      3 months ago
      $6.00
      petrmich
      3 months ago
      $5.00
      lordloku
      3 months ago
      $1.00

      Audit

      The Gemstone Sheriff program allows our members to request an audit on any product, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.

      Shipping Details

      Shipping:
      $18.00 23 days via Standard Shipping - Tracked
      Ships from:
      Thailand

      Payment Options

      • paypal

      Overview

      Listing Type : Standard
      Product ID : 2620676
      Starting Bid : $1
      Starts : 17th November 2024 04:56 am PST
      Ends : 21st November 2024 04:56 am PST
      * All prices are in USD