Mahenge Umbalite Garnet 6.95Ct Natural Purple Garnet
- 存貨單位
- 尺寸(毫米)
- 12.400 x 7.700 x 6.700mm
- 重量 (cts)
- 6.950
- Treatment
- No Treatment
- Shape
- Fancy
- 類型
- Faceted
- Clarity
- VVS
- 顏色
-
Garnet is the name used for a large group of rock-forming minerals. These minerals share a common crystal structure and a generalized chemical composition of X3Y2(SiO4)3. In that composition, "X" can be Ca, Mg, Fe2+ or Mn2+, and "Y" can be Al, Fe3+, Mn3+, V3+ or Cr3+.
These minerals are found throughout the world in metamorphic, igneous, and sedimentary rocks. Most garnet found near Earth's surface forms when a sedimentary rock with a high aluminum content, such as shale, is subjected to heat and pressure intense enough to produce schist or gneiss. Garnet is also found in the rocks of contact metamorphism, subsurface magma chambers, lava flows, deep-source volcanic eruptions, and the soils and sediments formed when garnet-bearing rocks are weathered and eroded.
Most people associate the word "garnet" with a red gemstone; however, they are often surprised to learn that garnet occurs in many other colors and has many other uses. In the United States, the major industrial uses of garnet in 2012 were waterjet cutting (35%), abrasive blasting media (30%), water filtration granules (20%), and abrasive powders (10%).
Item Details
- 存貨單位
- 尺寸(毫米)
- 12.400 x 7.700 x 6.700 mm
- 重量 (cts)
- 6.950
- Treatment
- No Treatment
- Shape
- Fancy
- 類型
- Faceted
- Clarity
- VVS
- 顏色
-
Garnet is the name used for a large group of rock-forming minerals. These minerals share a common crystal structure and a generalized chemical composition of X3Y2(SiO4)3. In that composition, "X" can be Ca, Mg, Fe2+ or Mn2+, and "Y" can be Al, Fe3+, Mn3+, V3+ or Cr3+.
These minerals are found throughout the world in metamorphic, igneous, and sedimentary rocks. Most garnet found near Earth's surface forms when a sedimentary rock with a high aluminum content, such as shale, is subjected to heat and pressure intense enough to produce schist or gneiss. Garnet is also found in the rocks of contact metamorphism, subsurface magma chambers, lava flows, deep-source volcanic eruptions, and the soils and sediments formed when garnet-bearing rocks are weathered and eroded.
Most people associate the word "garnet" with a red gemstone; however, they are often surprised to learn that garnet occurs in many other colors and has many other uses. In the United States, the major industrial uses of garnet in 2012 were waterjet cutting (35%), abrasive blasting media (30%), water filtration granules (20%), and abrasive powders (10%).
Item Details
運輸商 | 運送至:國家 | 運送到世界其他地區 |
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Standard Shipping - Tracked | $10.00 / :幾天天 | $15.00 / :幾天天 |
:國家
Standard Shipping - Tracked 對包含 2 或更多商品的訂單折扣為 $15.00
世界其他地區
Standard Shipping - Tracked 對包含 2 或更多商品的訂單折扣為 $20.00
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FedEx | $35.00 / :幾天天 | $35.00 / :幾天天 |
世界其他地區
FedEx 對包含 2 或更多商品的訂單折扣為 $35.00
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Express Shipping | $35.00 / :幾天天 | $60.00 / :幾天天 |
世界其他地區
Express Shipping 對包含 2 或更多商品的訂單折扣為 $60.00
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積極的
Very nice stone.
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積極的
Very nice stone.
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中性的
UV light SW and LW test showed no fluorescent . Microscope test showed fissures filled possibly w-glass resulting in orangish pink color on the half side of the stone. AIG reported HT inaccurately avoiding to state this gem was heavily infiltrated.