Solid 10k yellow gold genuine diamond/opal necklace

17 inches long Crafted in solid 10k yellow gold with genuine diamond/opal necklace Pre owned but never worn! Photos 4-5 shows coin size comparison and caliper . Some photos are zoomed Photos 3-6 show gold stamps This has been acid tested and professionally tested . Please view my other 10k, 14k, , Kay jewelers , zales , vintage , , white gold. Rose gold, yellow gold , gemstones , wedding rings Art Deco fine jewelry, engagement/wedding ring . Solid gold diamonds , opals,Ruby’s,emerald,gemstones,and other jewelry i have posted Two day shipping