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Extreamly Rarest Ct Natural Blue Grandidierite 1.90ct Madagascar Mined

1249
2

存货单位
尺寸(毫米)
10.700 x 7.120 x 4.030mm
重量 (cts)
1.900
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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Standard Shipping - Tracked折扣至$15.00 ,适用于包含2或更多商品的订单
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DHL $30.00 / :几天天 $30.00 / :几天天
:国家
DHL折扣至$30.00 ,适用于包含2或更多商品的订单
世界其他地区
DHL折扣至$30.00 ,适用于包含2或更多商品的订单

kenya-treasure
kenya-treasure
:城市,国家
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:总反馈

  • shalimargems
    shalimargems
    消极的

    Cheated me I haven't received the stone its been almost a month now inspite of the delivery had to be in the same city.

  • dcgrant
    dcgrant
    积极的

    A bit greenish but OK.

审计

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送货细节

船运:
$30.00 7通过DHL计数天数
发货自:
Thailand

付款方式

  • paypal
  • stripe

概述

列表类型 : Standard
产品编号 : 1987833
开始 : 13th December 2024 11:05 am PST
* 所有价格均以:货币为单位