Prasiolites have an aluminum content greater than 120 ppm and a higher overall trace elements content, which accounts for a strong absorption between 32 cm -1. Amethysts have an iron content greater than 20 ppm and a low content of sodium and potassium. The infrared bands of amethyst and prasiolite samples from different origins were correlated to the trace elements contents. IIIDepartamento de Engenharia Metalúrgica e de Materais, Universidade Federal de Minas Gerais, 30160-030 Belo Horizonte - MG, Brazil (Development), 35660-970 Pará de Minas - MG, Brazil ICentro de Desenvolvimento da Tecnologia Nuclear - CDTN (Nuclear Materials), 31270-901 Belo Horizonte - MG, Brazil Infrared and chemical characterization of natural amethysts and prasiolites colored by irradiationįernando Soares Lameiras I, * Eduardo Henrique Martins Nunes II Wander Luiz Vasconcelos III The color of amethysts and prasiolites are assigned to º and º centers formed by the exposure to ionizing irradiation and to the influence of lattice distortions due to the content of iron as a substitute for silicon and a high content of trace elements of large ionic radius like potassium.Īmethyst prasiolite infrared spectrum irradiation trace elements The broad band splits in several bands at low temperatures that are related to AlSi and FeSi. Colorless samples of quartz that become amethysts and prasiolites after irradiation have infrared spectra at room temperature with a broad band at 3441 cm-1 and a sharp band at 3595 cm-1. Prasiolites have an aluminum content greater than 120 ppm and a higher overall trace elements content, which accounts for a strong absorption between 32 cm-1. Wenn Ihr Land nicht aufgeführt ist, mailen Sie uns für ein Angebot.The infrared bands of amethyst and prasiolite samples from different origins were correlated to the trace elements contents. Wir versenden zu fast jedem Land um die Welt. (3) Lista de productos con cantidades que desee pedir (2) Su dirección de facturación (si es diferente a la dirección de entrega) Para una cotización de envío, por favor proporcione la siguiente: Si su país no aparece en la lista, envíenos un correo electrónico para solicitar un presupuesto. (3) Liste des produits avec des quantités que vous souhaitez commanderĮnviamos a casi todos los países del mundo. (2) Votre adresse de facturation (si différente de l'adresse de livraison) Pour obtenir un devis d'expédition, s'il vous plaît nous fournir les éléments suivants: Si votre pays ne figure pas, écrivez-nous pour un devis. Nous livrons dans presque tous les pays du monde entier. (3) List of products with quantities you want to order (2) Your invoice address (if different from delivery address) If you country is not in this list, email us for a quote.įor a shipping quote, please provide us with the following: We ship to nearly every country around the world. Mix several of these optical glass jewels together to create an attractive, eye-catching display. They have the very best light refraction, amplifying delicate colours in the lighter gems and seemingly causing the deeper colours gems to glow from within. Add it to a jewellery window display or a pirate treasure scene, for example.Īs shown in the photo above, our K9 glass gems are available in a wide range of colours and sizes, ranging from 4cm jewels to impressive 20cm gems. The purple jewel could also be used for commercial display purposes and would fit perfectly in many different displays. Not only is amethyst the birthstone of February, it is also used to celebrate 6th wedding anniversaries. It could be used as a paperweight, ornament or keepsake. The multi-faceted fake diamond would make a very welcome gift and even comes in a satin lined gift box, as shown. Create attractive display scenes with this beautiful purple amethyst gem, made from high quality, crystal cut K9 coloured glass.
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