An estate rare 18KT yellow gold ruby and diamond pin is a piece of jewelry made from 18KT yellow gold and set with rubies and diamonds. Crafted from high-quality 18KT yellow gold and adorned with sparkling rubies and diamonds, this rare estate pin is a stunning piece of jewelry that exudes luxury and sophistication. With its timeless design and exquisite gemstones, it's sure to elevate any outfit and make a statement wherever you go.