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4.75 Ct Incredible Natural Grandidierite Gemstone SKU A19

存货单位
尺寸(毫米)
14.570 x 10.520 x 5.530mm
重量 (cts)
4.750
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!

审计

该产品已由 Gemstone Sheriff 审核,他们发现以下内容:
  • 描述准确
  • 图片准确

Comments

The Verified Seller has provided accurate and complete information for this item including weight, dimensions, and treatment.

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送货细节

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$13.00 :通过 Standard Shipping - Tracked 计算天数
发货自:
Thailand

付款方式

  • paypal
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概述

列表类型 : Standard
产品编号 : 1061726
开始 : 23rd November 2024 12:33 am PST
* 所有价格均以:货币为单位