Shell Brooch, sterling silver.
I make this late in 2009 in my intro to jewellery and metalsmithing class. i textured layers of sheet silver then riveted them together.
I still wear it though mostly in winter because it’s a bit too heavy for light fabrics. It has a double pin brooch back to spread the weight of it evenly. While this is a large brooch it is definitely not the heaviest piece of jewellery i have made.