I ordered more so I have to update this review. I'm even more pleased. The smokey quartz and white topaz earrings are 6mm each--about 1.5 carats for each ear. However, the rose quartz and green amethyst are about 8mm per ear. I have ordered the green amethyst, rose quartz, smokey quartz, and the white topaz. Each one is beautiful. With the white topaz, I finally have a reasonable facsimile of diamond studs. They're so sparkly, and real gemstone. For $12! Unbelievable! Here's the previous review of the green amethyst: Light, mint green is a great color for summer. These earrings arrived within a week in a jewelry bag. They are made in Hong Kong and were clipped together--a nice touch that makes me think their QA processes are good. For $12 you get a lot of gorgeous sparkle. Order $25 worth from Amazon and they ship for free. What a deal! Stud earrings this size might not be for everyone, but they're very lightweight so they're perfect for me.