Super cute and trendy, these gemstone bar necklaces are perfect for everyday wear, the layered necklace style and a great gift for her! Peruvian blue opal is found in various shades and I love the display of these little beauties! Each necklace will vary from one to another slightly in gemstone colour and size.  I used a classic cable chain that is available in sterling silver or 14 kt gold fill and in your choice of length.