Obsidian Design Bracelet from the 80's I think, I purchased this new and can't find receipt.  It is definitely ocean jasper. The round stone looks like peridot and the triangle stones remind me of lemon quartz. At any rate, it is definitely not glass. The central stone is 1/2" tall. Three rings at end of Bracelet allow to wrist adjustment to 7" from 9". Marked Obsidian but can't find silver mark but I guarantee it is. The matching earrings have the silver mark. Message me if you want to buy them.