I'm really picky about my Amethysts -- generally, dark, but not TOO dark a purple (you just have to have light be able to get into the stone and bounce back out!) and often with red or blue highlights, depending on the stone and the direction of the light.

If you like larger stones, these earrings are for you!  The stones are 10mm rounds, and weigh 4 carats each.

These stones are set into a simple 14k Post Earring Mounting, allowing the most show of stone for the least expense in gold.  It's a good stable setting that doesn't set you back a month just to get one. 

There's no reason why these stone shouldn't last you for years, and dazzle every day of it.