The earring hooks and connector rings on these earrings are silver plated. The turquoise crystals have an AB (aurora borealis) finish that make them reflect light. The earrings also contain white pearl seed beads, silver spacers and a white opal Swarovski crystal dangling from the bottom. The diameter of the earrings is just over 1/2" and the length from the bottom of the earring hook is 1". They include plastic backs. Shipping: UNLESS you request otherwise, I ship everything by First Class mail with a tracking number. Upon your request, I can ship by Priority US Mail for $6.00. (Please see my shop policies.) If your shipping address is in Alaska or Hawaii or outside of the U.S., please message me before you purchase so that I can calculate shipping costs. Thanks for shopping!