Vintage Art Deco Lady's Platinum & 14K Yellow Gold Rubellite, Diamond, & Synthetic Ruby Pin Dimensions: 53mm X 21mm One Natural Oval Cut Rubellite. Twelve (12) Natural Diamonds. Twenty-Eight (28) Synthetic Pink Rubies. A glorious platinum and diamond brooch - 100% authentic Art Deco - impossible to reproduce today in this quality. It might seem expensive, but this is probably the only piece in the world like this and, as you can tell, it lasts forever. In later years, after you've passed on, this will be a testament to your good taste.