I love blues - I used genuine Swarovski crystals of light aquamarine bi-cones and rounds. Sterling silver vermiel spacers thru out. Tiny 2mm aqua cut seed beads with gold spacers. The neck measures 19.5 inches long to set on your collar bone. The earrings measure a demure 1.25 inches long excluding the lever backs.
The Peruvian opals do have some dendritic matter thru out which I find lends to their beauty. They are 10mm and 16mm in size. Signed with my usual Kia's logo tag.