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7 Cts-Rhodhochrosite Cabochone (2 PCS) TBG-4220 truebluegems

SKU
TBG-4220
Afmetingen (mm)
9.000 x 9.000 x 4.000mm
Gewicht (cts)
7.000
Treatment
No Treatment
Shape
Round
Type
Cabochon
Kleuren

TRADING AS LIGHTNINGOPALS LLC-TRUEBLUEOPALS AND GEMS

RHODHOCROSITE

Origin Argentina

2 PCS
POLISHED

Beautiful PINK COLOUR
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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truebluegems
truebluegems
family business
:stad land
Geverifieerd
5049e feedback

  • bonusbloke
    bonusbloke
    Positief

    Small but perfectly formed! Arrived very quickly thanks.

  • jtgems
    jtgems
    Positief

    Very nice very tiny

  • adrianrl
    adrianrl
    Positief

    The stone was more beautiful in person than in the picture.

  • luckygreen317
    luckygreen317
    Positief

    Paid and shipped - no feedback left after 100 days

  • tjames707
    tjames707
    Positief

    Paid and shipped - no feedback left after 100 days

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Vermeldingstype : Standard
Product-ID : 2444571
Begint : 17th October 2024 05:22 pm PDT
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