- More Detail Here:
- Faac Automatic Gates
Submitted by: Shu Arvilla
Choosing the best hematite magnetic bracelet
Magnetic bracelets like all magnetic jewelry varies significantly in quality. Magnetic bracelets can be made from magnetic beads, metal bangles or metal links. The most common types of magnetic bracelets are beaded magnetic bracelets. Beaded magnetic bracelets can be made from iron oxides. Magnetic beads are made of nano-metric sized iron oxide particles encapsulated or glued together with polymers.. Most iron ores mined today comprise the iron oxide minerals hematite, Fe2O3 (70% Fe); goethite, Fe2O3s H2O, (63% Fe); limonite, a mixture of hydrated iron oxides (up to 60% Fe); and magnetite, Fe3O4(72% Fe). They are abundant and mined on many continents.
The iron oxides are mined in very large scale quarries then pulverized into nanoparticles ranging from 5 to 50nm. Typically a mine has veins with a variety of iron oxides. Although magnetic beads are often called magnetite or hematite, they are mixtures of various grades and compositions of ores. These particles are glued together with polymers and formed into ceramic beads, drilled and then magnetized. So henceforth I will refer to the hematite and magnetite beads as magnetic beads.
Some people claim there magnetic bracelets are made with naturally magnetic beads although this is not true. A naturally magnetized lodestone only occurs in volcanic activity where an iron oxide mineral is propelled by explosion toward the North or South pole. A lodestone will be random in shape and have a magnetic field but it isn t strong enough for any therapeutic value. A natural lodestone beaded bracelet would have irregular non geometric natural beads. A bracelet with uniform geometric shaped beads to be made of natural magnets would have to be carved into its respective shape with astronomical costs.
The iron oxide beads bonded together with polymers are like a ceramic. Once formed they are polished then electrically magnetized in single strength, double strength and triple strength magnets. The Gauss ranges from 400 to 500 Gauss single strength to 1200 to 1500 Gauss triple strength. Very few people use triple strength hematite beads because the cost of the electricity is 400% higher than single strength. The quality of magnetic beads is dependent upon the hardness and the strength of the magnetic field.
Magnetic beads are most often made in China. The most common magnetic bracelet uses glass, plastic or synthetic colored imitation beads combined with the single strength magnetic beads strung on elastic or fishing line with magnetic clasps. The single strength beads are barely therapeutic. The elastic stretches out causing elongation and easily breaks. The abrasion of the beads strung on the fishing line causes frequent breakage.
A high quality magnetic bracelet uses triple strength magnetic beads fired at higher temperatures for more hardness. The magnetic beads hold a shiny luster that doesn’t change except where the bead rubs against the opposing bead or stone. The edges of the magnetic beads are drilled and rounded for less abrasion. The most effective stringing material for beaded jewelry is coated Accuflex 49 stranded stainless steel. A high quality magnetic bracelet will often use natural gemstone beads as well.
About the Author: Shu Arvilla has relieved pain using
for 12 years at fairs and festivals. He is the designer and manufacturer of his hematite magnetic bracelets and the founder of Superior Magnetics.