Cartier? Designer 18k gold leaf diamond brooch clip earrings bundle lot set

Authentic in amazing shape with no flaws, not sure about the brand, put google findings in photos, tried researching and zooming in pictures best I could, it has the same patent number as Cartier - Cartier? Vintage Designer 18k yellow brushed gold leaf multiple 0.35 carats vvs quality diamonds embellished brooch & clip maple earrings bundle lot set with gift box. Brooch stamped with number #528 and Earrings N-M 18KT 2639 PAT # 2423905. Together they weigh about an ounce. An ounce of 18k gold is presently worth 3k. Brooch: 2.5 X 1.75” Earrings: 1 X .75”