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Puntland custom bracelets with names The gem that glows at night-fluorite

Diposting di oleh Kingjy

Fluorite is an important fluorine-containing mineral in nature, so it is also called “fluorite”. A small number of fluorites are octahedrons and rhombic dodecahedrons, and some are twin crystals. Fluorite has glass luster, transparan menjadi tembus cahaya, hardness is brittle and easy to break, colorless and transparent are rare, mostly blue, green, purple, and white, but also yellow or orange, cokelat, smoke black and other colors, and some Crystals of yellow, green, blue, cokelat, red and other colors appear on the same fluorite. What’s more worth mentioning is that some fluorite has a peculiar fluorescence effect, yaitu, it emits strong fluorescence under the irradiation of a long-wave ultraviolet light source, and it also emits blue, green, red and other colors in the dark after being heated. , Some will also produce phosphorescence, appear bright at night.

Fluorite is originally low in hardness and has fully developed cleavage. The reason why it can be listed as a gem mineral is mainly because of its beautiful color and unique luminous effect. The transparent emerald green and purple fluorite are the top grades in fluorite , Can be used to polish into curved gemstones, which can pretend to be emeralds and amethysts, and are generally regarded as low-grade gems; fluorite with fluorescence effect can be made into “Mutiara malam” for viewing or collection, which also demonstrates its gem value. This kind of night pearl has appeared in large numbers in the Chinese jewelry market; the purple block aggregates are mainly used for carving decorative crafts, and the complete crystal clusters can be used as ornamental stones. Selain itu, as a mineral, fluorite is also widely used in smelting and chemical industries. It is used in large quantities to produce hydrofluoric acid and fluoride. High-quality fluorite can also be used as an optical material.

The history of human discovery and use of fluorite can be traced back thousands of years. China has begun to use fluorite to make beads and other ornaments as far back as the Neolithic Age; in the ancient Roman period, Europe also used fluorite to make cups, bowls, bottles, dll.. Utensils.

Fluorite is formed in hydrothermal veins and altered generations, and is also produced in some acidic and alkaline igneous rocks. Some fluorite veins are interspersed in some sedimentary rocks. It is a relatively widely distributed mineral in nature. The main producing areas are the United States, Britain, Switzerland, Perancis, Namibia, Australia and China, dll.. China’s fluorite reserves rank first in Asia, and the main producing areas are Zhejiang, Hunan, Shandong and Liaoning provinces.

 

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