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$261.00
預留未滿足
當前出價
6
出價
02/01/2025 09:28 am

Untreated 4.05 CT Pink Umbalite Garnet from Tanzania

6
220
6

存貨單位
尺寸(毫米)
10.000 x 7.400 x 5.300mm
重量 (cts)
4.050
Treatment
No Treatment
Shape
Emerald
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%).

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gemsofasia
gemsofasia
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送貨細節

船運:
$0.00 21透過Standard Shipping - Tracked計算天數
發貨自:
Thailand

付款方式

  • paypal

概述

列表類型 : Standard
產品編號 : 2576691
起拍價 : $1
開始 : 19th December 2024 09:28 am PST
結束 : 2nd January 2025 09:28 am PST
* 所有價格均以:貨幣為單位