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Se observa como una gama de plaquitas imprecisas, intensamente coloreadas, que se desplazan al mover la gema. Independientemente de su calidad es posible encontrar el ópalo en colores negro, gris, blanco, marrón, púrpura, amarillo, naranja, verde, azul-verdoso o incoloro.
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diseñador y distribuidor de gafas. Fundada en 1995 por François Fort, la empresa OPAL con sede en Lyon no sólo es líder europeo en monturas para niños y adolescentes, sino también el líder en Francia en el segundo par ofrecido por los ópticos.
Opal puede ayudar a regular la insulina dentro del cuerpo y desintoxicar y regenerar el hígado. Ayuda con el parto y el síndrome premenstrual y estimula la vejiga, los riñones y los ganglios linfáticos.
Opal is a hydrated amorphous form of silica (SiO 2 ·nH 2 O); its water content may range from 3% to 21% by weight, but is usually between 6% and 10%. Due to its amorphous property, it is classified as a mineraloid, unlike crystalline forms of silica, which are considered minerals.
Opal, silica mineral extensively used as a gemstone, a submicrocrystalline variety of cristobalite. In ancient times opal was included among the noble gems and was ranked second only to emerald by the Romans.
Photos of opal from around the world. Guidance for people who want to buy opal, see different types of opal, understand their names, learn about synthetics and imitations.
