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6.60 Cts-Rhodhochrosite Cabochone (2 PCS) TBG-4219 truebluegems

存货单位
TBG-4219
尺寸(毫米)
9.000 x 9.000 x 4.000mm
重量 (cts)
6.600
Treatment
No Treatment
Shape
Round
类型
Cabochon
颜色

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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世界其他地区
Standard Shipping - Tracked 对包含 2 或更多商品的订单折扣为 $30.00
FedEx $40.00 / :几天天 $40.00 / :几天天
:国家
FedEx 对包含 2 或更多商品的订单折扣为 $40.00
世界其他地区
FedEx 对包含 2 或更多商品的订单折扣为 $40.00
DHL $30.00 / :几天天 $30.00 / :几天天
世界其他地区
DHL 对包含 2 或更多商品的订单折扣为 $30.00

truebluegems
truebluegems
family business
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:总反馈

  • bonusbloke
    bonusbloke
    积极的

    Small but perfectly formed! Arrived very quickly thanks.

  • jtgems
    jtgems
    积极的

    Very nice very tiny

  • adrianrl
    adrianrl
    积极的

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

  • luckygreen317
    luckygreen317
    积极的

    Paid and shipped - no feedback left after 100 days

  • tjames707
    tjames707
    积极的

    Paid and shipped - no feedback left after 100 days

40.00%
优惠券代码 thanksgiving
有效期至
30th Nov 2024

审计

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送货细节

船运:
$30.00 :通过 Standard Shipping - Tracked 计算天数
发货自:
Australia

付款方式

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概述

列表类型 : Standard
产品编号 : 2444570
开始 : 22nd August 2024 05:20 pm PDT
* 所有价格均以:货币为单位