Riedel Vinum Chardonnay & Chablis Wine glass set of 6

Adhering to the Riedel principle of content commands shape, these Vinum wine glasses are designed to highlight the unique qualities of Chablis and Chardonnay. High-quality crystal makes the set as beautiful as it is functional, perfect for any table and occasion. The launch of the machine-made Vinum glass collection by Riedel Glass fundamentally changed the drinking glass culture. It later became the first varietal-specific machine-made glass in history! • Dimension: 7.75" • Holds 12.4 oz. • Crystal wine glasses • Crystal • Dishwasher safe 6 glasses to the set. High quality wine glasses. No chips or cracks. One glass with speckles that I have attempted to remove, but was unsuccessful. My attempt was to hand wash. Unsure if there are other tricks.