Vintage 18K 12mm Cultured Pearl studs !

I was told these are Vintage Pearls & they are Gorgeous pearls with adorable 18k gold clover ( shamrock) & heart on them. Pearls are seriously rare this size & color. They are near round with pink & blue overtones & a very good luster , acceptable thick nacre. 12MM with 18K yellow gold post & 18k backs covered in soft comfy easy but firm rubber/silicone over the 18k gold backings