These cufflinks may be Native American but I'm not quite sure. They are signed Roger who evidently is the artist. I wasn't able to find any info on him. In his inlaid design he used two colors of lapis, the dark blue with gold flecks and the lighter colored blue denim lapis. Also inlaid are thin pieces of black onyx and white mother-of-pearl. The face of the cufflink measures 1/2" square. They are stamped STERLING & ROGER. I polished them up a bit but they could use more. Excellent condition.