The stems are about 6 1/4" high and the top of the bowls are about 1/4". The base is not flat meaning you can put your finger inside the stem. The bowl glows under UV light. A member asked about any wear to the underside of the base of the stems. I'm a non-collector and my valuation might be very different than another members. But to me, they look like they've been sitting in a glass cabinet on display for however old they are.