The 48th Avenue: Signed Natural Diamond Crossover Ring. This ring showcases a captivating design with four shared-prong set rows of round brilliant-cut natural diamonds, elegantly weaving and crossing over each other. The diamonds collectively weigh approximately 1.38 carats by measurement, providing a dazzling display. The ring is signed with a hallmark and serial number; however, the maker's mark remains to be identified. Crafted in 14 karat white gold, the ring is currently sized at 7.5…