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silver ring design What is a gem? How are gems named?

Zveřejněno na podle Kingjy

V přírodě, all materials that have bright colors, Krystaly, and brilliance; pure texture, hard and durable; excellent craftsmanship; rare characteristics that can be processed into jewelry and handicrafts can be called gems. These materials include: natural mineral crystals (single crystals and crystal aggregates), amorphous rocks, and natural organic materials and man-made materials. Obecně řečeno, unprocessed rough stones and finished products are often collectively called gems, or for natural jewelry jade and artificial jewelry jade, they are collectively called gems. This is a broad concept of gems.

The narrow concept of gems generally refers to natural gems, to je, gems with Mohs hardness greater than 6, good transparency and bright colors. Such as diamond, červený, sapphire, emerald, Tourmaline, topas, granát, atd.

Humans have used gemstones for thousands of years, which has formed many different naming methods for gemstones. There are generally two names for gems, one is a commercial name, and the other is a mineral name. Most of the well-known gem names are commercial names. Most commercial names have a wide variety of names, some are named after colors, such as ruby, sapphire, and emerald; some are named after famous places of origin, such as Xiu jade, Dushan jade, and Nanyang jade; Some are named after special appearances, such as opal, star red, and sapphire; others are less standardized naming methods and are inductive, such as cubic zirconia (a artificial gemstone specially used to imitate diamonds) It is called Russian diamond, dyed quartzite is called Malaysian jade, and some low-grade jadeite with impure composition is called jade; some are named directly by the name of rock or mineral, such as garnet, spinel, and tourmaline.

Numerous naming methods have caused the inaccuracy and misleading of gem names. China’s national standards have clear regulations on the naming of gems. When selling jewellery, sellers must identify the gems in accordance with national standards. If the naming is wrong, it can be regarded as fraud. Proto, the jewelry business must master the naming principles of gemstones, so as not to cause unnecessary trouble.

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