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$120.00 USD
価格
1910
6

6.10 Carats Natural Grandidierite Gemstone

SKU
寸法(mm)
12.000 x 10.000 x 7.000mm
重さ (CT)
6.100
Treatment
No Treatment

Grandidierite is a rare 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

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).[4]

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. Nevertheless, lazulites have somewhat higher refractive indices and specific gravity. Grandidierites also have greater hardness.

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gems4selling
gems4selling
Welcome to our store, where your satisfaction is our top priority. We strive to provide a seamless and enjoyable shopping experience for all our valued customers. Here are some important policies and guidelines to ensure a smooth transaction: Returns Accepted in 14 Days: We understand that sometimes a purchase may not meet your expectations. Therefore, we gladly accept returns within 14 days of your receipt of the gemstone. Please ensure that the gemstone is in its original condition and packaging for a hassle-free return process. Contact our customer support team to initiate a return and receive further instructions. Order Cancellation Accepted in 24 Hours: If you wish to cancel an order, please notify us within 24 hours of placing the order. We will do our best to accommodate your request. Once the 24-hour window has passed, the cancellation may not be possible as we begin processing your order promptly. Reach out to our customer support team for assistance with order cancellations. Payment Should be Received Within 3 Days: We kindly request that payment for your successful bid or purchase be completed within 3 days. Prompt payment allows us to process and ship your order efficiently. If there are any unforeseen circumstances that may cause a delay in payment, please contact us in advance to make alternative arrangements. At our store, we prioritize transparency, excellent customer service, and your overall satisfaction. Should you have any questions, concerns, or require further assistance, please don't hesitate to reach out to our dedicated customer support team. We are here to ensure your experience with us exceeds your expectations. Happy shopping!
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概要

リストタイプ : Standard
製品番号 : 1655775
始まります : 9th November 2024 11:38 am PST
* すべての価格は:通貨で表示されます