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395
1

6.70 Cts-Rhodhochrosite Cabochone (2 PCS) TBG-4213 truebluegems

存貨單位
TBG-4213
尺寸(毫米)
9.000 x 9.000 x 4.000mm
重量 (cts)
6.700
Treatment
No Treatment
Shape
Round
類型
Cabochon
顏色

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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FedEx $40.00 / :幾天天 $40.00 / :幾天天
:國家
FedEx 對包含 2 或更多商品的訂單折扣為 $40.00
世界其他地區
FedEx 對包含 2 或更多商品的訂單折扣為 $40.00
DHL $30.00 / :幾天天 $30.00 / :幾天天
世界其他地區
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truebluegems
truebluegems
family business
:城市,國家
已驗證
:總反饋

  • bonusbloke
    bonusbloke
    積極的

    Small but perfectly formed! Arrived very quickly thanks.

  • jtgems
    jtgems
    積極的

    Very nice very tiny

  • ian2508
    ian2508
    積極的

    Paid and shipped - no feedback left after 100 days

  • smoky
    smoky
    積極的

    Paid and shipped - no feedback left after 100 days

  • smoky
    smoky
    積極的

    Paid and shipped - no feedback left after 100 days

審計

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送貨細節

船運:
$30.00 :通過 Standard Shipping - Tracked 計算天數
發貨自:
Australia

付款方式

  • stripe

概述

列表類型 : Standard
產品編號 : 2442038
開始 : 12th November 2024 05:28 pm PST
* 所有價格均以:貨幣為單位