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46.90CTS DUMORTIERITE ROUGH SPECIMEN RARE MINERAL RG-4221 RAREGEMS
- 存货单位
- RG-4221
- 尺寸(毫米)
- 23.700 x 23.600 x 17.000mm
- 重量 (cts)
- 46.900
- Treatment
- No Treatment
- 类型
- Specimen
- 颜色
-
DUMORTIERITE
NICE PALE BLUE COLOUR
FINE CRYSTAL SPECIMEN
Dumortierite is a fibrous variably colored aluminium boro-silicate mineral, Al7BO3(SiO4)3O3. Dumortierite crystallizes in the orthorhombic system typically forming fibrous aggregates of slender prismatic crystals. The crystals are vitreous and vary in color from brown, blue, and green to more rare violet and pink. Substitution of iron and other tri-valent elements for aluminium result in the color variations. It has a Mohs hardness of 7 and a specific gravity of 3.3 to 3.4. Crystals show pleochroism from red to blue to violet. Dumortierite quartz is blue colored quartzcontaining abundant dumortierite inclusions.
Dumortierite was first described in 1881 for an occurrence in Chaponost, in the Rhône-Alps of France and named for the French paleontologist Eugène Dumortier (1803–1873).[4] It typically occurs in high temperature aluminium rich regional metamorphic rocks, those resulting from contact metamorphism and also in boron rich pegmatites. The most extensive investigation on dumortierite was done on samples from the high grade metamorphic Gfohl unit in Austria by Fuchs et al. (2005).
It is used in the manufacture of high grade porcelain. It is sometimes mistaken for sodalite and has been used as imitation lapis lazuli.
Sources of Dumortierite include Austria, Brazil, Canada, France, Italy, Madagascar, Namibia, Nevada, Norway, Peru, Poland, Russia and Sri Lanka.
TRADING AS TRUEBLUEOPALS / LIGHTNINGOPALS LLC
- 存货单位
- RG-4221
- 尺寸(毫米)
- 23.700 x 23.600 x 17.000 mm
- 重量 (cts)
- 46.900
- Treatment
- No Treatment
- 类型
- Specimen
- 颜色
-
DUMORTIERITE
NICE PALE BLUE COLOUR
FINE CRYSTAL SPECIMEN
Dumortierite is a fibrous variably colored aluminium boro-silicate mineral, Al7BO3(SiO4)3O3. Dumortierite crystallizes in the orthorhombic system typically forming fibrous aggregates of slender prismatic crystals. The crystals are vitreous and vary in color from brown, blue, and green to more rare violet and pink. Substitution of iron and other tri-valent elements for aluminium result in the color variations. It has a Mohs hardness of 7 and a specific gravity of 3.3 to 3.4. Crystals show pleochroism from red to blue to violet. Dumortierite quartz is blue colored quartzcontaining abundant dumortierite inclusions.
Dumortierite was first described in 1881 for an occurrence in Chaponost, in the Rhône-Alps of France and named for the French paleontologist Eugène Dumortier (1803–1873).[4] It typically occurs in high temperature aluminium rich regional metamorphic rocks, those resulting from contact metamorphism and also in boron rich pegmatites. The most extensive investigation on dumortierite was done on samples from the high grade metamorphic Gfohl unit in Austria by Fuchs et al. (2005).
It is used in the manufacture of high grade porcelain. It is sometimes mistaken for sodalite and has been used as imitation lapis lazuli.
Sources of Dumortierite include Austria, Brazil, Canada, France, Italy, Madagascar, Namibia, Nevada, Norway, Peru, Poland, Russia and Sri Lanka.
TRADING AS TRUEBLUEOPALS / LIGHTNINGOPALS LLC
运输商 | 运送至:国家 | 运送到世界其他地区 |
---|---|---|
Standard Shipping - Tracked | $19.00 / :几天天 | $30.00 / :几天天 |
:国家
Standard Shipping - Tracked 对包含 2 或更多商品的订单折扣为 $19.00
世界其他地区
Standard Shipping - Tracked 对包含 2 或更多商品的订单折扣为 $30.00
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FedEx | $39.00 / :几天天 | $40.00 / :几天天 |
:国家
FedEx 对包含 2 或更多商品的订单折扣为 $39.00
世界其他地区
FedEx 对包含 2 或更多商品的订单折扣为 $40.00
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DHL | $19.00 / :几天天 | $30.00 / :几天天 |
世界其他地区
DHL 对包含 2 或更多商品的订单折扣为 $30.00
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积极的
Nice specimen! Thank you!
-
积极的
Paid and shipped - no feedback left after 100 days
-
积极的
Paid and shipped - no feedback left after 100 days
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