Grandidierite, 2.6ct, that colour reminds me on wonderful holidays!
- 存货单位
- Ax1
- 尺寸(毫米)
- 11.700 x 7.900 x 4.700mm
- 重量 (cts)
- 2.600
- Treatment
- No Treatment
- Shape
- Pear
- 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!
- 存货单位
- Ax1
- 尺寸(毫米)
- 11.700 x 7.900 x 4.700 mm
- 重量 (cts)
- 2.600
- Treatment
- No Treatment
- Shape
- Pear
- 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!
运输商 | 运送至:国家 | 运送到世界其他地区 |
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Standard Shipping - Tracked | $12.00 / :几天天 | $16.00 / :几天天 |
:国家
Standard Shipping - Tracked 对包含 3 或更多商品的订单折扣为 $15.00
世界其他地区
Standard Shipping - Tracked 对包含 3 或更多商品的订单折扣为 $17.00
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FedEx | $27.00 / :几天天 | $46.00 / :几天天 |
:国家
FedEx 对包含 2 或更多商品的订单折扣为 $26.00
世界其他地区
FedEx 对包含 2 或更多商品的订单折扣为 $45.00
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Express Shipping | $36.00 / :几天天 | $75.00 / :几天天 |
:国家
Express Shipping 对包含 3 或更多商品的订单折扣为 $40.00
世界其他地区
Express Shipping 对包含 3 或更多商品的订单折扣为 $65.00
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Registered Shipping | $9.00 / :几天天 | $16.00 / :几天天 |
:国家
Registered Shipping 对包含 3 或更多商品的订单折扣为 $15.00
世界其他地区
Registered Shipping 对包含 3 或更多商品的订单折扣为 $15.00
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Standard Shipping - Untracked | $5.00 / :几天天 | $13.00 / :几天天 |
:国家
Standard Shipping - Untracked 对包含 3 或更多商品的订单折扣为 $15.00
世界其他地区
Standard Shipping - Untracked 对包含 3 或更多商品的订单折扣为 $13.00
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积极的
What a delight! The color and sparkle are outstanding
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积极的
Fantastic looking gem! Cut was nice and delivery was fast.