Ruby is July's birthstone, and the only birth month assigned a stone classified as precious across every major gemological and cultural tradition in history.
Elemental Detail
Fine jewelry earring posts are produced in matching precious metals throughout: yellow gold, white gold, rose gold, sterling silver, and platinum, with platinum and high-karat gold specifications favored for sensitive piercings.
Care & Keeping
Fine jewelry earring posts are manufactured to consistent gauge standards, which is what makes universal clutch back sizing viable. The internal grip of a standard clutch back is sized to accommodate that gauge range, and comfort backs use the same post gauge range with a larger grip body for heavier earring formats.