New Raw Blue Opal Crystal Stud Gemstone Earrings. Sterling Silver or 14k Gold plated Hypoallergenic posts. Handmade in the USA. The meaning of Blue Opal is spiritual healing. It has been cherished as a great healing gemstone. It is said to release tension and to bring peacefulness. It is recommended for the people who tend to have stress and worries. It can release any kinds of stress.