The Islamic love of geometry is echoed in the Mashrabiya screens created on their travels wherever they went. Geometry builds on simple shapes of circles, squares and rectangles turning them into puzzling patterns. And through the spaces in between, it is possible to create endlessly varying vistas for the eye to wonder at.

As I walked from palace to palace around Morocco, the trellis pattern was repeated in each one: different and yet the same. I made gold sections of the squares and created earrings and rings set with diamonds, turquoises and lapis lazuli.

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.