Boulder opals, from Queensland Australia, are the second most valuable opal following black opals and are renowned for their flashes of luminous color that shimmer in the light. Our Hidden Treasures Down Under pendant features 17. 5 carats of a gorgeous Boulder Opal, with flashes of turquoise, cobalt blue, emerald green and tangerine. Paired with 1 carat of Madeira Citrine, the handcrafted, 1 5/8-inch by 1-inch sterling silver pendant is suspended on an 18-inch sterling silver chain. On the pack of the pendant is our Dreamscape Jewelry Design logo.