By Alona's Scarlet Necklace is made from a chunky 18k gold-plated rolo chain finished with a crystal-encrusted clasp for an added extra sparkle. By Alona's Scarlet Necklace is made from a chunky 18k gold-plated rolo chain finished with a crystal-encrusted clasp for an added extra sparkle. By Alona is a demi-fine London-based jewellery brand that celebrates Mediterranean heritage. Created by Alona Shelemy, the daughter of a fine jeweller, who fell in love with the world of jewellery at a young age, each piece is hand-crafted using 18 karat gold-plated bronze, rhodium, gold or sterling silver - with the adornment of semi-precious gemstones - to design modern and contemporary jewellery exuding chic opulence.