I am very pleased with these earrings!  I am a female in the Air Force and needed a pair of studs to wear with my military uniforms.  Upon consulting Air Force Instruction 36-2903, Dress and Personal Appearance of AF Personnel, dated 11 July 2011, I found it says:

"Female Airmen may wear small (not exceeding 4mm in diameter) spherical, conservative (moderate, being within reasonable limits; not excessive or extreme) round white diamond, gold, white pearl, or silver earrings as a set with any uniform combination."

Although these studs are much smaller than I would normally choose, they are perfect for my wear on duty and look very pretty on.