These black agate and white howlite earrings have a unique marble look that can be worn with either the black or white side facing out. 12K gold plated brass foundation and trim. The white howlite is said to reduces anxiety, tension and stress. The black line agate is a calming stone that promotes inner strength. Drop measures about 1.25 inches. Made with hypoallergenic / surgical steel posts and plated gold brass backings.