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84.60 CTS Natural Rhodochrosite Argentina Gem grade TBM-1728
- SKU
- 寸法(mm)
- 64.000 x 26.000 x 3.000mm
- 重さ (CT)
- 84.600
- Treatment
- No Treatment
- 色
-
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.
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.
- SKU
- 寸法(mm)
- 64.000 x 26.000 x 3.000 mm
- 重さ (CT)
- 84.600
- Treatment
- No Treatment
- 色
-
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.
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.
| 配送業者 | 発送先:国 | その他の国への配送 |
|---|---|---|
| Standard Shipping - Tracked | $20.00 / :日日 | $30.00 / :日日 |
|
：国
:数量以上のアイテムを含む注文では、:プロバイダーは $25.00 に割引されます
世界のその他の地域
:数量以上のアイテムを含む注文では、:プロバイダーは $30.00 に割引されます
|
||
| FedEx | $40.00 / :日日 | $40.00 / :日日 |
|
：国
:数量以上のアイテムを含む注文では、:プロバイダーは $40.00 に割引されます
世界のその他の地域
:数量以上のアイテムを含む注文では、:プロバイダーは $40.00 に割引されます
|
||
| DHL | $30.00 / :日日 | $30.00 / :日日 |
|
世界のその他の地域
:数量以上のアイテムを含む注文では、:プロバイダーは $30.00 に割引されます
|
||
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ポジティブVery pleased with the specimen and transaction
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ポジティブ
Sweet Thank you
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中性
Responsive seller, which is appreciated. Lovely gem. The only issue was with shipping. I paid for post but it was sent via Fedex. Fedex (of course) charged me illegal fees over a month after delivery! This was why I chose post and not Fedex.
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ポジティブ
Paid and shipped - no feedback left after 100 days
