925 Silver Stamped Dichroic Glass Necklace. * How is dichroic glass jewellery made? Multiple ultra-thin layers of transparent oxides of such metals as titanium, chromium, aluminium, zirconium, or magnesium; or silica are vaporised by an electron beam in a vacuum chamber. The vapor then condenses on the surface of the glass in the form of a crystal structure. *How durable is dichroic glass? The final layer that we adhere to the glass is Quartz Crystal (This material is almost as strong as an actual diamond). But, because it is so extremely thin, if something can scratch the glass, it will usually also scratch the coating. * The powerful Metaphysical Properties of Dichroic crystal energies believed to activate the Third Eye, Crown, and etheric chakras and create gentle awareness to use the hidden creative side of the wearing individual. Like a crisp shifting shades of colours, it carries the spirit of journey, dreams and intuition, of exploration and elucidation.