$275.00 USD
预计建议零售价:rrp
1393
7

3695.00 CTS PURPLE LABRADORITE SPECIMEN -MADAGASCAR [STS2059]

存货单位
尺寸(毫米)
130.000 x 80.000 x 40.000mm
重量 (cts)
3695.000
类型
Specimen
颜色

LABRADORITE PURPLE
Mined at Fort Dauphin Madagascar -Africa 
A  purple tone  in this sspecimen is very unique. This specimen does have a play of purple with other colours. 
well polished.

Labradorite  a feldspar mineral, is an intermediate to calcic member of the plagioclase series.. The streak is white, like most silicates. The refractive index ranges from 1.555 to 1.575. Twinning is common. As with all plagioclase members the crystal system is triclinic and three directions of cleavage are present two of which form nearly right angle prisms. It occurs as clear, white to gray, blocky to lath shaped grains in common mafic igneous rocks such as basalt and gabbro, as well as in anorthosites.

The iridescence is the result of light refracting within lamellar intergrowths resulting from phase exsolution on cooling in the Boggild miscibility gap.

Gemstone varieties of labradorite exhibiting a high degree of iridescence are called spectrolite; moonstone and sunstone are also commonly used terms, and high-quality samples with good iridescent qualities are desired for jewelry.

 


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sedagems
sedagems
Hi Welcome to the Sedagems store, Run by Paul Sedawie and specializing in Australian sapphires and gems stones he has collected on his many buying trips world wide. All stock has a money back guarantee as your continued business is our business.
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  • royrock
    royrock
    积极的

    Beautiful agate piece , and as always fast efficient service from Sedagems

15%
优惠券代码 BLACKFRIDAY24
有效期至
3rd Dec 2024

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概述

列表类型 : Standard
产品编号 : 1363220
开始 : 12th November 2024 10:41 pm PST
* 所有价格均以:货币为单位