When I choose jewelry for my wife or daughter, I always choose 14K gold as the material for such accessories. Its main advantage is that this metal is hypoallergenic and suitable even for children. By the way the best prices for gold jewelry I find here https://www.fjewellery.co.uk/en/gold-earrings-14_ct-hoop/ . In addition, there are many color options for gold: from the traditional yellow or solid white to bright red and pink shades.