Severine reminds me of the gentle lapping of waves on the shores around the coastline of Scandinavia, swirling into eddies around pebbles. I love the caressing of the strong gold bands around the stone, like a big hug on a cold windswept day by the sea.

Taken from the Greek word "amethystos", meaning sober; amethyst quartz has illustrious calming properties, protecting wearers with a sense of tranquillity and soberness. Famed for its regal deep purple colour, February's birthstone is said to enhance your focus and open your mind to critical thinking and clarity, and to also protect from inebriation. It is often worn by bishops set in a ring. Most are sourced from alluvial deposits in Brazil, Madagascar, Zambia and Uruguay, and Cassandra likes to juxtapose their splendour with rubies and aquamarine, or even green African garnets.