Color change gems have two approximately equal sized transmission windows. A blue gemstone appears blue because it absorbs all frequencies of light except for blue. A gemstone that absorbs both blue and red light will appear blue when the light is rich in blue wavelengths (e.g. in sunlight or fluorescent light) and red or purple when the light is rich in red wavelengths (e.g. in incandescent light).
Everything was good about this order except I was a little disappointed in the product because it was so small. This is the first time that I have ever bought a gem so I was very unfamiliar with the sizes mainly because measurements were in metric.
I really like how many options there are and the fact that each stone has multiple photos and clearly explains where they came from and their size and quality
Me parece que la pagina es muy accesible para la compra y el pago ; solo tengoUna oportunidad de mejora seria que exista la opcion de recoger el pedido directamente en la sucursal de mensajeria porque en ocasiones casi siempre estamos fuera de casa. en general todo muy bien por el momento.Otra opcion de mejora es que existieran cupones de descuento y ofertas especiales , ya que una amiga y yo compramos frecuentemente gemmas para uso personal y a ella le comentaron que no tenian ningun descuento como cliente frecuente , esto lo pregunto previo a hacer este pedido .gracias !