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$89.00 USD
価格

Grandidierite, 8.2ct, huge stone from Madagascar, top colour!

968
1

SKU
Gv1
寸法(mm)
13.800 x 9.700 x 5.100mm
重さ (CT)
5.000
Treatment
No Treatment
Shape
Oval
タイプ
Faceted
Clarity
SI

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!



配送業者 配送先Austria その他の国への配送
Standard Shipping - Tracked $12.00 / 3 $16.00 / 21
:国
Standard Shipping - Tracked 、 3以上のアイテムを含む注文で$15.00に割引されます
世界のその他の地域
Standard Shipping - Tracked 、 3以上のアイテムを含む注文で$17.00に割引されます
FedEx $27.00 / 2 $46.00 / 5
:国
FedEx 、 2以上のアイテムを含む注文で$26.00に割引されます
世界のその他の地域
FedEx 、 2以上のアイテムを含む注文で$45.00に割引されます
Express Shipping $36.00 / 2 $75.00 / 5
:国
Express Shipping 、 3以上のアイテムを含む注文で$40.00に割引されます
世界のその他の地域
Express Shipping 、 3以上のアイテムを含む注文で$65.00に割引されます
Registered Shipping $9.00 / 7 $16.00 / 21
:国
Registered Shipping 、 3以上のアイテムを含む注文で$15.00に割引されます
世界のその他の地域
Registered Shipping 、 3以上のアイテムを含む注文で$15.00に割引されます
Standard Shipping - Untracked $5.00 / 3 $13.00 / 28
:国
Standard Shipping - Untracked 、 3以上のアイテムを含む注文で$15.00に割引されます
世界のその他の地域
Standard Shipping - Untracked 、 3以上のアイテムを含む注文で$13.00に割引されます

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!
Graz 、 Austria
確認済み
2860フィードバック

  • andrewchi
    andrewchi
    ポジティブ

    Received, thank you

  • davetcummings
    davetcummings
    ポジティブ

    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
    ポジティブ

    Received, thank you

  • andrewchi
    andrewchi
    ポジティブ

    Received, thank you

  • oneill
    oneill
    ポジティブ

    Great stone . great seller

監査

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発送詳細

配送:
$16.00 21日 ( Standard Shipping - Tracked経由)
発送元:
Austria

支払いオプション

  • paypal
  • stripe
  • escrow
この販売者は、 Austriaでの取引に20.00%税金を追加します。

概要

リストタイプ : Standard
製品番号 : 2397311
始まります : 13th December 2024 01:51 pm PST
* すべての価格はUSDで表記されています