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$300.00 USD
價格
481
2

Gem Quality Garnet 2.30Ct Top Color Natural Fanta Spessartite

存貨單位
23H
尺寸(毫米)
7.150 x 7.150 x 5.450mm
重量 (cts)
2.300
Treatment
No Treatment
Shape
Round
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



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概述

列表類型 : Standard
產品編號 : 2532054
開始 : 20th November 2024 01:03 am PST
* 所有價格均以:貨幣為單位