Among other gemstones, nothing is able to capture the majesty and encompassing colour of the sky than sapphires. Whether it’s the deep blue of an evening sky or a mid-blue of a sunny day, there’s a sapphire that perfectly mimics its appearance.
Gemstone lovers and specialists are enraptured by the stunning beauty of sapphires, though, like most gemstones, their beauty and magnificence is only fully realised after undergoing a set of processes. Sapphires, in its original form, are rough and unassuming. Yet after a series of processes, and with the skills of craftsmen, these stones are transformed into sparkling gems that are often found in jewellery pieces like engagement rings.
http://jacobsthejewellers.com/blog/archive/from-raw-mineral-to-engagement-rings-the-transformation-of-sapphire/