20-25mm Cultured Keshi Pearl Station Necklace In Gold. 40" The long keshi pearl necklace is not only one of fashion's hottest topics, it's also the perfect stage for something unexpected. Stationed on golden links, 20-25mm cultured freshwater keshi pearls are one of a kind in shape and shimmer. 14kt yellow gold necklace. Pearl birthstones are the perfect gift for June birthdays.