Anita KoYellow Gold, Diamond and Emerald Stud Earringsyellow goldLos Angeles brand Anita Ko has carved out a space in the luxury jewellery sphere through wearable designs that call upon the extravagance of gemstones. These earrings, for example, are crafted from polished 18-karat yellow gold with a diamond and pear-cut emerald creating a bold contrast.Los Angeles brand Anita Ko has carved out a space in the luxury jewellery sphere through wearable designs that call upon the extravagance of gemstones. These earrings, for example, are crafted from polished 18-karat yellow gold with a diamond and pear-cut emerald creating a bold contrast.