9/12/2023 0 Comments Tigers eye gemWhen tiger's eye is cut and finished with some of its host rock intact, it is traded as ' tiger's eye matrix'. Tiger's eye is better known than hawk's eye and pietersite because it is much more common in occurrence. Tiger's eye is actually formed from hawk's eye, while pietersite is a rare type of gemstone composed mostly of hawk's eye and tiger's eye. As a type of quartz, there are many gemstone varieties that are similar or related to hawk's eye, including tiger's eye and pietersite. Crocidolite is classified as a type of asbestos. It is technically a pseudomorph of quartz that originally formed from fibrous crocidolite, one of several minerals which belong to the riebeckite family of amphibole silicates. Hawk's eye is one of the many types of macrocrystalline quartz. Imitation hawk's eye gemstones can be found imitations are typically composed of artificial fiber-optic glass. All reputable gemstone sellers declare any such enhancements. Some darker and redder stones may have been dyed or heated to improve color, and in some rare cases, nitric acid can be used to lighten colors that are too dark. Hawk's eye gemstones are not normally treated or enhanced in any way. Most stones are shaped as ovals, but other shapes may also be found, including pears, rounds and freeform shapes. In some cases, hawk's eye may be carved as an ornamental stone. Hawk's eye is almost always cut en cabochon in order to maximize the desirable chatoyant effects. With hawk's eye, the bird's eye effect can be seen even in plain, flat-cut stones. Hawk's eye chatoyancy or the 'bird's eye' effect can be seen as small rays of light reflecting off the surface of stones. It exhibits an iridescence that enhances its silky luster, particularly when cut en cabochon. Hawk's eye is an opaque fibrous aggregate. Its chatoyancy can result in darker or lighter color tones depending on the viewing angle. Like tiger's eye, hawk's eye is typically multicolored with golden stripes or wavy patterns. Some materials may contain higher levels of oxidized iron, which results in a more bluish-brown color. Hawk's eye is normally blue-gray to blue-green in color. Nowadays, the term ' pietersite' may be used to describe any brecciated form of hawk's eye or tiger's eye.Ä«uying Hawk's Eye and Determining Hawk's Eye Value Back to Top Hawk's Eye Color Pietersite has a rather chaotic swirling pattern because during its formation, materials that make up its composition are broken apart, swirled about and are then reformed and cemented together by quartz. Pietersite is any brecciated aggregate made up mostly of hawk's eye and tiger's eye. As blue crocidolite is dissolved by quartz, traces of iron oxide remain less iron tends to result in the blue color of crocidolite and if more iron is present, color tends to result in the brownish golden color of tiger's eye. Tiger's eye is actually formed from hawk's eye. It is closely related to tiger's eye and pietersite, both of which exhibit similar chatoyancy. Hawk's eye is famed for its chatoyancy, reminiscent of the 'eye of a hawk'. The transformation of hawk's eye begins as quartz slowly becomes embedded between the fibers of crocidolite, eventually completely replacing it while retaining the fibrous shape of the original mineral. It is considered to be one of the several forms of asbestos. Crocidolite is a fibrous blue mineral belonging to the riebeckite family of amphibole silicates. In the case of hawk's eye, it began its life as crocidolite and was later transformed into quartz. A pseudomorph is one mineral that changes into another mineral over time. Hawk's eye is actually a pseudomorph of quartz. More specifically, it is a variety of macrocrystalline quartz. Hawk's eye is a blue-gray to blue-green opaque gemstone variety of fibrous quartz. About Hawk's Eye - History and Introduction
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |