Most gemstone names are based on the mineral, such as Garnet, Turquoise, Lapis lazuli, Malachites, etc. The Classic Name of Gems is a mineralogical, petrological, material and traditional gemological name of gem varieties. Gemstone Names are divided into classic name and trade name. Dyed Jade is commonly treated in this manner.ĭyed & Heated: To improve or change the color of gemstones by heating and dying process, such as most Red Agate, Black Agate and Red Tiger Eye are dyed and heat-treated.Įlectroplated: The surface of gemstone is covered with a thin film by plating to change its color or luster, such as Electroplated Quartz Crystal, Electroplated Lava Rock. Color treatment of our gems is divided into Dyed, Dyed & Heated and Electroplated.ĭyed: Infiltrating color-causing substances (such as colored oils, dyes, etc.) into gemstone by chemical methods to improve or change the color of gemstones. Imitation Stones are gemstones or other materials used to imitate the look and color of a kind of stone, but possess neither their chemical nor physical characteristics.Įxcept for cutting and polishing, gemstones are often treated to enhance the color, luster, clarity, optical characteristics, durability or usability of the stone. The components may be natural or man-made materials. Synthetic Gemstones are man-made crystals, non-crystalline solid or aggregates, which may be with chemical, optical and physical characteristics of its natural mineral counterpart.Īssembled Gemstones are made of two or more pieces of materials by artificial splicing that give the impression of gems. Our manufactured stones include synthetic gemstones, assembled gemstones and imitation stones. These include dark gray or red Hematite and yellow Limonite.Manufactured Stones are materials that are produced wholly or partly by hand for use as ornaments. Tiger's Eye admixed with iron oxide lines or patterns. Strongly chatoyant Tiger's Eye from the Hamersley Range in WesternĪustralia, with a beautiful multicolored effect of reddish brown, Hawk's Eye is formed from an incomplete pseudomorphism of Bluish-gray variant of Tiger's Eye, lacking the yellow or brownĬolor. Quartz or Opal pseudomorph after fibrous Serpentine, found near Globe in Arizona. Gemstones cuts of Tiger's Eye are encountered but are not common. It is also used for costume jewelry and occasionally used for ornate carvings or floral pins. Tiger's Eye is a very inexpensive gemstone, and is used in beads for bracelets and necklaces, as well as in pendants. Perfect form due to the wavy nature of the fibers. Cat's eye effect in Tiger's Eye do exist, but are uncommon in Ideally the cut should be perfectly parallel to the length of the fibers to achieve fullest chatoyancy. When cutting and polishing Tiger's Eye gemstones, skillful orientation to the fibrous structure must be applied to achieve the best chatoyancy. Such material is often called Tiger's Eye Matrix. Tiger's Eye may form together with brownish-red or metallic-gray Hematite, or with yellow Limonite, where these minerals forms stripes, streaks, or patterns within the Tiger's Eye. Type of material is known as as Hawk's Eye. When this happens, the result is a stone with a bluish-gray color (and often with streaks or overtones of brown or yellow), but still with chatoyant effect. The original Crocidolite is a bluish-gray color, and sometimes the During the replacement process, the iron within the Crocidolite dissolves and stains the Quartz, thereby providing the golden yellow to brown color of the Tiger's Eye. These fibers form in a parallel yet wavy orientation, and this causes the intriguing chatoyant effectĮxhibited in Tiger's Eye. Crocidolite is a type of asbestos mineral, which means itsĬomposition is of fine, dense fibers. Tiger's Eye forms when Quartz forms over existing bluish-gray Crocidolite, and eventually entirely replaces it.
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