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3.50 Ct Incredible Natural Grandidierite Gemstone SKU A3

存货单位
尺寸(毫米)
10.600 x 7.800 x 6.100mm
重量 (cts)
3.500
Treatment
No Treatment
颜色

Grandidierite was first discovered in 1902 in Madagascar by Alfred Lacroix, a French mineralogist. Lacroix named the mineral in honor of French explorer and naturalist Alfred Grandidier (1836–1912), the first authority on the natural history of Madagascar.

Since its initial discovery, samples of Grandidierite have been found in only a few locations around the world, including Malawi, Namibia and Sri Lanka. But the few gem quality specimens have come mainly from Madagascar.

Gem-quality Grandidierite is extremely rare, and it often appears on the list of the 10 rarest varieties in the world, along with gems like jeremejevite, painite, benitoite and taafeite.

Gemologically, Grandidierite is a magnesium aluminum borosilicate. It has a hardness of 7 to 7.5 on the Mohs scale, similar to garnet; a density of 2.85 to 3.00, in the approximate range of tourmaline; and a refractive index of 1.590-1.623.

Name: GRANDIDIERITE GEMSTONE

Place of Origin: MADAGASCAR

TREATMENT: NATURAL



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  • nayelylobo
    nayelylobo
    积极的

    Extremely well packaged, took me a good 10 minutes to be able to get it out. Thanks!

  • lordloku
    lordloku
    积极的

    A+++ fast shipping items as described!

  • lordloku
    lordloku
    积极的

    A+++ fast shipping items as described!

  • lordloku
    lordloku
    积极的

    A+++ fast shipping items as described!

  • lordloku
    lordloku
    积极的

    A+++ fast shipping items as described!

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发货自:
Thailand

付款方式

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概述

列表类型 : Standard
产品编号 : 1017816
开始 : 22nd November 2024 01:56 am PST
* 所有价格均以:货币为单位