Gold jewellery made with 18 carats, being quiet pure compared to 14 or 11 and 10 carat gold, it is very common that scratches and shine get dull in rough use. If we compare 18 carat gold made jewellery with 14 carat gold ornaments, 18k gold jewellery is costly almost double the price of 14k gold ornaments. 18 carat gold contains pure gold more than 14 carat gold, so 18k gold ornaments will be softer than 14k gold jewellery. Hence, 18 carat gold jewellery is not recommended for a rough routine work setup. Though you can use 18 carat gold jewellery on special events like marriages, engagements and anniversaries. It is not recommended to wear 18 carat gold ornaments while showering. It means you can not wash the ornaments, as well. Water can damage the upper shine layer of gold.