The delphi blue ring is finished with a beautiful blue Crystal stone. This fine 2mm ring has a comfort fit on the inside and is available in all even EU sizes from 48 to 62. The Crystal stone is beautifully faceted and you can combine several Delphi rings together to create your own combination of colours! All Didyma jewelry is made from 316L stainless steel in combination with beautiful natural stone. We choose this material because it is very durable, light weight and hypo-allergenic. The colour will not fade over time if you treat it with care! Rock crystal is a shiny stone made of quartz. It's hard, so it doesn't scratch easily, and it's found all around the world. Many people believe it has special properties, such as: 1. Purity: the clear appearance of rock crystal has made it a symbol of purity, clarity of thought, and spiritual enlightenment. It is often associated with a clear mind and soul. 2. Healing and energy: in the realm of crystal healing, rock crystal is considered a "