Solid 18K yellow gold and lapis lazuli cufflinks that are beautifully crafted and top quality. The only marks are 18K. The lapis is a half-bead and measures 3/4" in diameter X about 1/4"H. The back end is textured and the mechanisms work great. The cufflinks weigh 16.5 grams. The cufflinks are in excellent original condition. They can be worn be a man or a woman. A great addition to any cufflink wardrobe.