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$36.00 USD
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290.55CTSLABRADORITE HEART PARCEL "ELECTRIC MIDNINGHT" [STS1635]

2922
4

存货单位
尺寸(毫米)
30.000 x 25.000 x 12.000mm
重量 (cts)
290.550
Shape
Heart
颜色

 LAPRADORITE HEART CARVING FROM MADAGASCAR-. ELECTRIC MIDNINGHT! Natural stone that has been hand carved and waxed added to get a fine luster.

Parcel of 4 stones. The weight and size is app

 

 

 

 

Labradorite is truly a fascinatingly beautiful mineral which reminds me of black opal. Its a mineral whose charm is not fully noticed and may be overlooked if not viewed from the proper position. Generally a dull, dark looking mineral with no special virtue until the colorful shiller is observed glowing on the surface. Labradorite can produce a colorful play of light across cleavage planes and in sliced sections called labradorescence. The usually intense colors range from the typical blues and violets through greens, yellows and oranges. Some rare specimens display all these colors simultaneously.

Note the reflection you see is from the light we used to take the picture.

 

The color display is from lamellar intergrowths inside the crystal. These intergrowths result from compatible chemistries at high temperatures becoming incompatible at lower temperatures and thus a separating and layering of these two phases. The resulting color effect is caused by a ray of light entering a layer and being refracted back and forth by deeper layers. This refracted ray is slowed by the extra travel through the layers and mixes with other rays to produce a light ray coming out that has a different wavelength than when it went in. The wavelength could correspond to the wavelength of a particular color, such as blue. The effect depends on the thickness and orientation of the layers. If the layers are too thick or too thin no color shiller is seen. Also if the viewer does not observe from the precise angle or if light is not supplied from the proper angle then no color shiller is seen. The labradorescence is truly a one of a kind mineralogical experience and must be observed in person in order to truly appreciate its beauty.

Labradorite is a member of the plagioclase series of minerals. The plagioclase series comprises felspars that range in chemical composition from pure NaAlSi3 O8 to pure CaAl2 Si2 O8 . Labradorite is defined at approximately the 50% to 70% CaAl2 Si2 O8 . Labradorite by definition must contain 50-70% calcium to 50-30% sodium in the sodium/calcium position of the crystal structure. All members of the plagioclase series usually display lamellar twinning called “Albite Twinning”. The twinning is caused by a error in the crystal structure during its growth.

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FedEx $12.00 / :几天天 $39.00 / :几天天
:国家
FedEx折扣至$12.00 ,适用于包含2或更多商品的订单
世界其他地区
FedEx折扣至$39.00 ,适用于包含2或更多商品的订单
Registered Shipping $9.00 / :几天天 $16.00 / :几天天
:国家
Registered Shipping折扣至$9.00 ,适用于包含2或更多商品的订单
世界其他地区
Registered Shipping折扣至$16.00 ,适用于包含2或更多商品的订单

sedagems
sedagems
Hi Welcome to the Sedagems store, Run by Paul Sedawie and specializing in Australian sapphires and gems stones he has collected on his many buying trips world wide. All stock has a money back guarantee as your continued business is our business.
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:总反馈

  • rustynut
    rustynut
    积极的

    Good stone great service

  • martin11
    martin11
    积极的

    Great thank very much, lovely pearls.

  • philsgems
    philsgems
    积极的

    Nice piece of rough. thankyou

  • philsgems
    philsgems
    积极的

    Nice stone. Thankyou

  • philsgems
    philsgems
    积极的

    Have received the rough. Nice colour. Thankyou

5%
优惠券代码 SEDADEALS
有效期至
2nd Jan 2025

审计

Gemstone Sheriff计划允许我们的会员对任何产品申请审核,审核由独立的Gemologist人员完成,负责评估产品描述和图片的准确性。

送货细节

船运:
$16.00 21通过Registered Shipping计数天数
发货自:
Australia

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  • paypal
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该卖家在Australia交易中添加了10.00%税。

概述

列表类型 : Standard
产品编号 : 920969
开始 : 18th December 2024 06:16 pm PST
* 所有价格均以:货币为单位