152.20 CTS Natural Rhodochrosite Argentina Gem grade TBM-1718
- UGS
- tbm-1718
- Dimensions (mm)
- 60.000 x 33.000 x 4.000mm
- Poids (cts)
- 152.200
- Treatment
- No Treatment
- Couleurs
-
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: TrigonalMohs scale hardness: 3.5-4Crystal 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 nω=1.814 to 1.816, nε=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.
- UGS
- tbm-1718
- Dimensions (mm)
- 60.000 x 33.000 x 4.000 mm
- Poids (cts)
- 152.200
- Treatment
- No Treatment
- Couleurs
-
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: TrigonalMohs scale hardness: 3.5-4Crystal 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 nω=1.814 to 1.816, nε=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.
Fournisseur d'expédition | Expédition vers Australia | Expédition dans le reste du monde |
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Standard Shipping - Tracked | $20.00 / 7 | $30.00 / 14 |
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DHL | $30.00 / 2 | $30.00 / 21 |
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rare large gemstones and minerals.
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Négatif
unfortunately the colors in person under artificial or natural light look nothing like the ones posted on the listing. The stone appears very dark blue and it is hard to guess it is a parti sapphire.
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Positif
Amazing stone!
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Positif
Love it!
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Positif
Paid and shipped - no feedback left after 100 days