"Softly rounded cabochons remind me of pebbles worn smooth by the sea. Marina is my design that caresses these beautiful organic shapes with gold, and links them together letting the light that runs through them light up the stones."

Extraordinary pleochroism makes the infinite blues and violet shades of tanzanite so lustrous. Tanzanite is trichroic, displaying blue, purple, and yellow in varied directions of light whilst holding a rich blue body colour.

The birthstone for December and a precious jewel for meditation, this gem is a reminder of wintery moonlit nights. But this intense colour, that Cassandra so loves to design with, comes at a price - the stones are fragile and should be worn with great care.