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      $2,923.00 USD
      Estimated RRP $8,700.00

      146.15 CTS Natural Rhodochrosite Argentina Gem grade TBM-1713

      4034
      1

      SKU
      Dimensions (mm)
      80.000 x 38.000 x 4.000mm
      Weight (cts)
      146.150
      Treatment
      No Treatment
      Colours

      RHODHOCROSITE

      Origin Argentina

      free form cabs
      highly polished
      Natural Rhodochrosite

      Beautiful watermelon - Color
      Treatment-NONE

      Diaphaneity, Transparent to translucent. Specific gravity, 3.7. Optical properties, Uniaxial (-). Refractive index, nω = 1.814 - 1.816 nε = 1.596 - 1.598. Birefringence, δ = 0.218. Pleochroism, weak. Ultraviolet fluorescence, None. References. Rhodochrosite is a manganese carbonate mineral with chemical composition MnCO3.

      Crystal system‎: ‎Trigonal
      Mohs scale hardness‎: ‎3.5-4
      Crystal class‎: ‎Hexagonal scalenohedral (3m); ...

      Optical properties‎: ‎Uniaxial (-)

      Rhodochrosite is a manganese carbonate mineral with chemical composition MnCO3. In its (rare) pure form, it is typically a rose-red color, but impure specimens can be shades of pink to pale brown. It streaks white, and its Mohs hardness varies between 3.5 and 4. Its specific gravity is between 3.5 and 3.7. It crystallizes in the trigonal system, and cleaves with rhombohedral carbonate cleavage in three directions. Crystal twinning often is present. It is transparent to translucent with refractive indices of =1.814 to 1.816, =1.596 to 1.598. It is often confused with the manganese silicate, rhodonite, but is distinctly softer.

      Rhodochrosite forms a complete solid solution series with iron carbonate (siderite). Calcium, (as well as magnesium and zinc, to a limited extent) frequently substitutes for manganese in the structure, leading to lighter shades of red and pink, depending on the degree of substitution. It is for this reason that the most common color encountered is pink.

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      Australia
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      Rest of the world
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      DHL $30.00 / 2 days $30.00 / 21 days
      Rest of the world
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      trueblueminerals
      trueblueminerals
      rare large gemstones and minerals
      Mermaid Beach, Australia
      Verified
      814 Feedback

      • peketrain
        peketrain
        Positive

        Very pleased with the specimen and transaction

      • scsamler
        scsamler
        Positive

        This stone made me fall in love with Padparadsha sapphire. Truly wonderful!

      • gmiller69
        gmiller69
        Positive

        Paid and shipped - no feedback left after 100 days

      20%
      Coupon code love
      Valid Until
      28th Feb 2025

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      Shipping Details

      Shipping:
      $30.00 14 days via Standard Shipping - Tracked
      Ships from:
      Australia

      Payment Options

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      Overview

      Listing Type : Standard
      Product ID : 904830
      Starts : 13th February 2025 06:10 pm PST
      * All prices are in USD