A lost clutch back is easily replaced. Clutch backs are standardized fittings available in matching precious metals, and any jeweler or jewelry retailer can fit new ones to a standard-gauge post without modifying the earring.
Visually Speaking
The post finding is the choice whenever an earring is meant to stay put: studs, clusters, button earrings, drop earrings with rigid tops, any format where flush contact with the earlobe is the design intent rather than movement and hang.
Origin Story
Ceylon sapphires present a lighter, more pastel blue than the saturated depth of Burmese or Kashmir material. The tone is even and cool, with a transparency that lets the color read as open rather than dense. Sri Lanka has been producing stones with these characteristics for over two thousand years, and the country remains one of the world's primary sapphire sources.