I ordered these in the 7x5mm size, which were fantastic.  The stones are clear and sparkle well in the light.  The setting seems to be well made and secure, and I'm not worried about the stone falling out.

Regarding the size of the earrings: be aware that the 7x5mm stone looks like 1-1.25ct earrings, which may be on the larger size of what will pass as a real diamond.