Handmade natural gemstone earrings, Unique jewelry for women, Beautiful gift for a birthday, anniversary, wedding, engagement. The stud earrings has oval shape and size is 6mm X 4mm. The earrings is made of 925 sterling silver. All of natural rocks by kala jewelry is handmade with love and passion, You are more than welcome to visit my shop for more jewelry designs. All my Jewelry will be sent in a gift box with lots of love and care. If you have any questions about jewelry, we will answer promptly. Handmade, natural product Stone: Blue Tanzanite, Metal: 925 Solid Sterling Silver. Tanzanite is known as a great integrator of heart and mind.