Well, when you can't choose your favorite dendritic agate, you just grab a bunch, right? I've set a column of four of these wonders of nature in silver and one in 22k gold and added gold dots and welo opal clusters. Below is a teardrop of sparkling black druzy. The chain adjusts from 16 to 18 inches. All silver has been oxidized to near black. 22k gold bezels, 14k gold headpins wrapping the opals.