This is a form of jewellery you rarely see. It is called a slide and it is made to wear on a piece of ribbon around your neck. This example is Irish in origin and is marked with 900 and another indistinguishable touch mark. The design is of dainty forget me nots that looks stunning next to black velvet. This slide is 1 5/8 inches across by 1 9/16 inches tall. 1 1/2 inch ribbon is what fits onto the slide. C. 1890 and in good condition.