Rocks Gemstone Collection 9ct Yellow Gold Stud Earrings With A Malachite Round Disc. Inject a touch of gold and green into your everyday look with these statement earrings. They feature a circular malachite disc encased in 9ct Gold. Malachite is said to have healing properties that absorb negative energies from around and within you. An eye catching pair of studs that are beautiful, inside and out. Find similar pieces from our 'Rocks Gemstone' Collection to create the perfect set. 9mm circle Hallmarked in the Assay Office at Dublin Castle