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164.80 CTS Natural Rhodochrosite Argentina Gem grade TBM-1715

3456
3

存貨單位
尺寸(毫米)
80.000 x 35.000 x 4.000mm
重量 (cts)
164.800
Treatment
No Treatment
顏色

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.

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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trueblueminerals
trueblueminerals
rare large gemstones and minerals
:城市,國家
已驗證
:總反饋

  • peketrain
    peketrain
    積極的

    Very pleased with the specimen and transaction

  • scsamler
    scsamler
    積極的

    This stone made me fall in love with Padparadsha sapphire. Truly wonderful!

  • setillia
    setillia
    中性的

    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.

  • bainesrh
    bainesrh
    積極的

    Beautiful gemstone

20%
優惠券代碼 Gift
有效期至
31st Dec 2024

審計

Gemstone Sheriff計畫允許我們的會員要求對任何產品進行審核,該審核由獨立的Gemologist人員完成,該資格人員評估商品描述和圖片的準確性。

送貨細節

船運:
$30.00 14透過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 : 904832
開始 : 20th December 2024 06:15 pm PST
* 所有價格均以:貨幣為單位