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$39.00 USD
价格

Grandidierite, 4.45ct, cushion cut nice one from Africa!

678
1

存货单位
Fmzk23
尺寸(毫米)
13.000 x 9.100 x 5.200mm
重量 (cts)
4.450
Treatment
No Treatment
Shape
Cushion
类型
Faceted
Clarity
SI
颜色

Grandidierite is a mineral that was first discovered in 1902 in southern Madagascar. The mineral was named in honor of French explorer Alfred Grandidier (1836–1912) who studied the natural history of Madagascar.

A rather rare mineral, blue-green grandidierite is seldom seen in gem or jewelry collections. Translucent material is sometimes cut into cabochons. Faceted pieces are rare. As cabochons, translucent grandidierite can range from 1 to 10 carats and up to about one inch in size. Most material is generally opaque.[citation needed]

Since its discovery in 1902, most grandidierite used as a gem has been translucent. Recent discoveries of transparent material in Sri Lanka (around 2000) and a new deposit in Madagascar (2014) have resulted in faceted gemstones.

Grandidierites appear bluer in color the more iron (Fe) they contain. A recently discovered gemstone, blue ominelite is the Fe-analogue (Fe, Mg) to grandidierite (Mg, Fe).

Grandidierites display strong trichroic pleochroism. That means they can show three different colors depending on the viewing angle: dark blue-green, colorless (sometimes a very light yellow), or dark green.

While trichroism can usually help distinguish grandidierites from other gems, lazulites can occur with blue-green colors and show colorless/blue/dark blue pleochroism. They also appear cabbed and, more rarely, faceted. Nevertheless, lazulites have somewhat higher refractive indices and specific gravity. Grandidierites also have greater hardness.


Shipping: For special requests such as express delivery please contact me. For lost stones the seller is not liable, therefore an additional insurance is recommended. Right of return within two weeks after receiving the shipment. Payment via PayPal, Credit Card, or Bank transfer is possible. For the shipping I generally use: Austrian Post or FedEx. Unfortunately from Austria only DHL "express" is possible.


Please pay your stones in between 48 hours or contact me. Otherwise I need to cancel the deal.

If there is anything you shouldn't be satisfied with please just let me now and we will find a way to solve every problem. My aim is to make you happy with beautiful stones of good quality, good communication is the easiest way to find a solution!



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Registered Shipping $9.00 / :几天天 $16.00 / :几天天
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Registered Shipping折扣至$15.00 ,适用于包含3或更多商品的订单
世界其他地区
Registered Shipping折扣至$15.00 ,适用于包含3或更多商品的订单
Standard Shipping - Untracked $5.00 / :几天天 $13.00 / :几天天
:国家
Standard Shipping - Untracked折扣至$15.00 ,适用于包含3或更多商品的订单
世界其他地区
Standard Shipping - Untracked折扣至$13.00 ,适用于包含3或更多商品的订单

stonehengejpd
stonehengejpd
Selling all kind of gems, great quality at affordable prices, based in the heart of Europe! In case you may have special wishes just let me know :-) If you shouldn´t be satisfied with an order please do not give a negative feedback just let me know and there is always a way to find a solution that everybody is happy!
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:总反馈

  • andrewchi
    andrewchi
    积极的

    Received, thank you

  • davetcummings
    davetcummings
    积极的

    This gem arrived in a reasonable time, and it is absolutely spectacular. It looked exactly like the photos and the cut was just perfect. I will certainly do business with stonehengejpd in the future.

  • andrewchi
    andrewchi
    积极的

    Received, thank you

  • oneill
    oneill
    积极的

    Great stone . great seller

审计

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送货细节

船运:
$16.00 21通过Standard Shipping - Tracked计数天数
发货自:
Austria

付款方式

  • paypal
  • stripe
  • escrow
该卖家在Austria交易中添加了20.00%税。

概述

列表类型 : Standard
产品编号 : 2448111
开始 : 14th December 2024 12:50 pm PST
* 所有价格均以:货币为单位