An artificial gem means a crystalline or amorphous body that is artificially manufactured and has no known counterpart in nature. When naming, it is necessary to add the word "artificial" in front of the material name, such as "artificial yttrium gallium garnet", "artificial yttrium aluminum garnet", etc., except for "glass" and "plastic". Synthetic gemstones have the properties of gemstones and can be used in gemstone ornaments, mainly as a replacement or counterfeit of certain types of natural gemstones such as artificial barium titanate, artificial garnet garnet (YAG), artificial garnet garnet (GGG), etc. High dispersion properties, often used as imitation diamonds. How to identify gems?
Artificial gemstone difference
1. Non-natural stones and some imitation gems and synthetic gems. Counterfeit gemstones are usually made of low-cost materials such as plastic, but externally like gemstones, most buyers can distinguish them with the naked eye. Artificial gemstones are artificially synthesized in a short period of time with chemical materials, and their physical properties and chemical composition are identical to those of natural gemstones.
2, to identify the quality of artificial gemstones, from the refractive index, hardness, external, weight and other aspects. In general, the higher the refractive index, the stronger and more shiny the gloss, which is commonly referred to as "very hot." Secondly, the higher the hardness of the artificial gemstone, the stronger the ability to resist sculpting and grinding, which makes the polished gemstone sharp and perfect, can be embedded in the jewelry for a long time without being rubbed and tarnished. Although zirconia is close to diamonds in terms of refractive index and hardness, it can satisfy the effect of “false and true†in appearance. However, the content of zirconia is almost twice that of diamonds. That is to say, zirconia artificial gems of the same size are more than diamonds. weight.
3, artificial crystal products in the light glare, but after the fingerprints and dirt, the gloss will be greatly reduced, rubbing with a towel will be counterproductive. To make them "young forever", they can be soaked in a low-level detergent, taken out after 3-5 minutes, blown dry with a fan, and it will be as good as ever.
From the perspective of gemology, the concept of gemstones has broad and narrow meanings.
The concept of gems and jade in a broad sense is not divided. It refers to gems. It refers to minerals or rocks that are magnificent, hard and durable, and can be honed and carved into jewelry and crafts, including natural and synthetic, and also partially organic. material.
Artificial gem identification
The narrow concept is divided into gemstones and jade. Gemstones refer to single crystals or twin crystals that are magnificent in color, crystal clear, hard and durable, and can be honed into gemstone jewelry, including natural and synthetic, such as diamonds, sapphires, etc. And jade means a mineral aggregate or rock that is magnificent in color, hard and durable, and can be honed and carved into jewelry and handicrafts, such as jade, nephrite, Dushan jade, jade jade, etc., the same contains both natural, Also contains synthetic.
Jade has a narrow and broad sense. The narrow sense refers only to jadeite (represented by Burmese jade) and nephrite (represented by Hetian jade); the broad sense contains many kinds of minerals and rocks carved as arts and crafts. As for colored stone, it means low-grade arts and crafts stone with fine color and texture, such as marble, which is more delicate and delicate, has lower hardness and is not strong in gloss but can meet the processing requirements. Some scholars advocate the inclusion of colored stones in the broad sense of jade, or temporarily use colored stones as a synonym for jade.
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