Uruguay and Brazil are large world producers of amethyst.
Oxidation is a surface treatment applied to the silver which gives the jewellery its retro quality.
Marcasite is a mineral that has existed for thousands of years. Its use dates back to antiquity, where it was often employed in jewelry and other ornamental applications. Marcasite was particularly popular during the Victorian era in the 19th century and has continued to be used in jewelry and decoration since then.